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DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

United States Earthquakes, 1974

By

Jerry L. Coffman

and

Carl W. Stover

Open-File report 84-974

Prepared in cooperation with National Oceanic and Atmospheric Administration.

This report has not been reviewed for conformity with U.S. Geological Survey editorial standards.

1984

Contributors

Contributors to this publication are listed below according to the type of data supplied or service performed.

Hypocenters and magnitudes:Pamela A. Covington, U.S. Geological SurveyGerald J. Dunphy, U.S. Geological SurveyW. Leroy Irby, U.S. Geological SurveyWaverly J. Person, U.S. Geological SurveyHawaiian Volcano Observatory, U.S. Geological Survey

Intensities:Jerry L. Coffman, NOAA, Environmental Data Service Ruth B. Simon, U.S. Geological Survey

Geodesy:B. K. Meade, NOAA, NOS, National Geodetic Survey

Tsunamis:

Mark G. Spaeth, NOAA, National Weather Service

Strong-motion seismograph data:Charles F. Knudson, U.S. Geological Survey Richard P. Maley, U.S. Geological Survey Virgilio Perez, U.S. Geological Survey Christopher Rojahn, U.S. Geological Survey Stephen Schwartz, U.S. Geological Survey

Well-water levels:Kenneth L. Rennick, U.S. Geological Survey

Computer programs, editorial assistance, and manuscript review:

Sharon R. Bush, NOAA, Environmental Data Service Leslie D. Morris, NOAA, Environmental Data Service Carl A. von Hake, NOAA, Environmental Data Service Carol Weathers, NOAA, Environmental Data Service

111

Contents

PAGE

Introduction ..................................................................... \National Geophysical and Solar-Terrestrial Data Center............................. \U.S. Geological Survey ...................................................... 2Seismology Collaborators ..................................................... 3Epicenter Maps ............................................................. 4Magnitude and Intensity Ratings ............................................... 4Modified Mercalli Intensity Scale of 1931 ....................................... 5

Earthquake Descriptions .......................................................... 9Introduction ................................................................ 9Summary of Earthquake Activity ............................................... 9Northeastern Region ......................................................... 10Eastern Region.............................................................. 53Central Region .............................................................. 55Western Mountain Region .................................................... 54California and Western Nevada ................................................ 65Washington and Oregon ......................................................71Alaska ....................................................................71Hawaii .................................................................... 74Panama Canal Zone .......................................................... 77Puerto Rico ................................................................ 77Virgin Islands .............................................................. 77

Principal Earthquakes of the World ................................................. 79

Miscellaneous Activities .......................................................... 83Horizontal Control Surveys for Crustal Movements Studies ......................... 83Tsunamis .................................................................. 83Fluctuations in Well-Water Levels .............................................. 83

Strong-Motion Seismograph Data ................................................... 93Introduction ................................................................ 93Accelerograph Records ....................................................... 93

Index of Town Names ........................................................... 103

LIST OF TABLES

TABLE PAGE

1 Locations of earthquakes and related phenomena that occurred in the UnitedStates during 1974 ..................................................... 11

2 Principal earthquakes of the world during 1974 ............................. 80

3 Earthquake fluctuations in well-water levels, January 1 throughDecember 31, J974 .................................................... 85

4 Earthquakes in 1974 believed to have caused fluctuations in well-water levels .... 90

5 Summary of accelerograph records obtained from earthquakes in 1974 .......... 95

LIST OF ILLUSTRATIONS

FIGURE PAGE

1 Locations of primary USGS and NOAA seismograph stations ................. 3

2 Plot of United States earthquake epicenters in 1974 .......................... 5

3 Plot of earthquakes that were felt or caused damage in 1974 .................. 7

4 Area affected by Georgia earthquake of August 2 ........................... 53

5 Area affected by South Carolina earthquake of November 22 .................. 55

6 Area affected by Texas Panhandle earthquake of February 15 .................. 58

7 Area affected by southern Illinois earthquake of April 3 ...................... 59

8 Area affected by Missouri earthquake of May 13 ............................ 63

9 Area affected by central California earthquake of November 28 ................ 70

10 View of destruction in the village of Pattan, West Pakistan, after December28 earthquake ......................................................... 79

11 A tsunami (seismic seawave) sweeps toward man on Hilo, Hawaii, beachin April 1946 ......................................................... 84

VI

Introduction

United States Earthquakes, 1974 contains descriptions of all earthquakes that were felt or caused damage in the U.S. and nearby territories during the year. Each descrip tion includes pertinent instrumental data (date, origin time, geographic location, and depth, when available), a brief account of the area affected, and reported effects on people and inanimate objects. Earthquakes are listed chronologically in 11 regions, an arrangement selected principally to highlight natural seismic divisions. The regions are: 1) Northeastern, which includes New Eng land and the State of New York; 2) Eastern, which in cludes the central Appalachian Mountains area and the region around Charleston, S.C.; 3) Central, which en compasses the area between the Eastern Region and the Rocky Mountains; 4) Western Mountain, which includes all remaining States except those on the West Coast; 5) California and Western Nevada; 6) Washington and Oregon; 7) Alaska; 8) Hawaii; 9) Panama Canal Zone; 10) Puerto Rico; and 11) Virgin Islands.

Instrumental data used by the U.S. Geological Survey to compute earthquake epicenters listed in the "Earth quake Descriptions" section and in tables 1, 2, and 4, have been obtained from NOAA, USGS, and cooperating seismograph observatories both domestic and foreign. Sources of noninstrumental data (macroseismic informa tion) include questionnaire canvasses of U.S. Post Of fices; reports from seismology collaborators; newspaper clippings; bulletins of the Seismological Society of America; special reports of other organizations; and felt data collected by NOAA's National Weather Service and seismology collaborators.

NATIONAL GEOPHYSICAL ANDSOLAR-TERRESTRIAL DATA

CENTER

The National Geophysical and Solar-Tejrestrial Data Center (NGSDC) is one of the six major facilities of NOAA's Environmental Data Service. NGSDC's Solid Earth Data Services Division is responsible for data ac

tivities in the field of seismology. Its services include preparing local and regional seismic histories for en gineers, actuaries, and other scientists, and answering direct inquiries from the public on all aspects of historical earthquakes. Additional services and products include publishing annual earthquake summaries and revised his torical earthquake reports; and making available in several formats copies of seismograms, accelerograms, dis placement meter records, digitized strong-motion seis mograms, and epicenter lists. Many of these products and services are based on seismic records or other data that have originated with USGS recording networks or with USGS data-reduction facilities. Information concerning services and products of NGSDC may be obtained from the National Geophysical and Solar-Terrestrial Data Center, NOAA/EDS, Boulder, Colo. 80302. Some of these seismological services and products are described in the following paragraphs.

Earthquake Data FileThe earthquake data file lists worldwide hypocenters

geographically and chronologically cm»3^ 1900-1974. (Additional noninstrumental data, intensity V aftd-above, are available for the United States from June 1638.) The file is available on magnetic tape and 16-mm microfilms- Monthly updates on punched cards also may be pur chased. The file gives date, origin time, geographic loca tion, focal depth, magnitude, and intensity (Modified Mercalli) for each event when available. Computer searches for one, or combination, of the parameters above can be made. Additional information is available on re quest.

Strong-Motion Earthquake DataAll records in the strong-motion file, dating from the

initial accelerograms recorded in 1932, are available. Records for the years 1932-1970 may be purchased on seven reels of 35-mm microfilm, as 70-mm film chips, or as full-size paper copies. Digitized accelerograms may be obtained on magnetic tape or punched cards. The same information (through 1971) is described in geographic arrangement in Key to Geophysical Records Documenta tion No. 2, Catalog of Strong-Motion Seismograph Sta tions and Records, also available from NGSDC.


Other Data

The USGS Preliminary Determination of Epicenters Monthly Listing, a chronological listing of earthquakes located throughout the world, may be purchased on 16-mm microfilm for the period 1965-1974. It contains for each earthquake the time of occurrence, geographic coordinates, region, felt and damage data, depth, mag nitude, and other useful information.

The USGS Earthquake Data Report, a twice-weekly compilation of data used in the computation of the report described above, is now available on 16-mm microfilm for the years 1969-1974. It contains station arrival times, individual distances, azimuths, and traveltime residuals.

The Reid Earthquake Catalog, compiled by the late Professor Harry F. Reid, is a comprehensive collection of earthquake and volcano data recorded on cards (3x5 in.) and augmented by newspaper clippings of principal earth quakes. The catalog, which is in chronological sequence and cross-indexed by geographical regions, covers the time from before Christ to 1931. It is available on five reels of 16-mm microfilm.

Seismograms from Worldwide Network

Seismograms ate available from all stations (124) in the Worldwide Netvyork of Standard Seismograph Stations (WWNSS), whfch operates with identical instruments. Eacksfation produces six Seismograms daily. In addition,

^records from ten high-gain, long-period stations are avail able beginning in January 1971. Seismograms from other selected stations foreign, Canadian, and U.S. Geological Survey networks may also be obtained. Re quests for these records should include time, date, station, components, and type of copies desired. Special seismogram packages are available (beginning in January 1974) for earthquakes of (1) magnitude 6.5-7.4, and (2) mag nitude 7.5 and above for WWNSS and other stations that exchange records through World Data Centers. A list of available formats and prices will be supplied upon re quest.

Publications

NGSDC issued the following publications in 1974: Key to Geophysical Records Documentation No. 3,

Catalog of Earthquake Photographs. This catalog gives brief descriptions and some examples of photographs of earthquake damage and felt-area and seismicity maps available from NGSDC.

Seismological Publications and Services. This pamph let describes earthquake data and services available from several sources within the Federal Government.

U.S. GEOLOGICAL SURVEYThe U.S. Geological Survey maintains an earthquake

reporting system that provides accurate and rapid epi center locations and magnitude values to the press and other interested groups. These results are available within 2-3 hours for earthquakes of magnitude 6l/2 or larger. Locations and magnitudes of smaller events are computed on request or on receipt of a press report.

USGS, NOAA, and cooperating seismic observatories throughout the world also furnish data for the epicenter program of USGS. Figure 1 shows locations of primary USGS and NOAA seismograph stations. Basic data from these and approximately 200 additional seismic stations are routinely telegraphed to USGS for use in epicenter computation. Some 250 other seismic stations are can vassed for data that are critical in the location of particular earthquakes.

During 1974, the locations of 4,921 epicenters were announced in the twice-weekly Preliminary Determina tion of Epicenters (PDE) list. Epicenters are published when sufficient information has accumulated to insure a reasonable degree of accuracy. The results are prelimi nary and do not always agree with later epicenters deter mined from additional seismic readings or from new data with critical azimuths and distances. For special studies, an inquiry should be made to the USGS (Denver Federal Center, Branch of Seismicity and Earth Structure, Stop 967, Box 25046, Denver, Colo. 80225) for possible re- computation of epicenters of interest.

USGS coordinates the collection of all types of earth quake information, with the special objective of correlat ing instrumentally determined earthquake locations with noninstrumental locations indicated by intensity data. This correlation is achieved through intensive regional investigations of earthquakes by local organizations and USGS. Primary data are gathered by a canvass of the epicentral area using questionnaire cards. Cities that re ceive questionnaire cards are selected by computer, based upon an analysis of the earthquake magnitude and pro jected felt area. When returned and analyzed, this infor mation is used to map the seismic areas of the country in order to promote public safety through a better under standing of earthquake phenomena. Because the success of this data-collection program depends largely on the cooperation of local officials and citizens, all who receive earthquake questionnaire cards are urged to complete and return them to the office indicated.

USGS issued the following technical reports in 1974:Preliminary Determination of Epicenters. These

twice-weekly reports list the approximate hypocentral lo-

Introduction

USGS WORLDWIDE NETWORK STANDARD SEISMOGRAPH STATION

USGS SEISMOGRAPH STATION

NOAA SEISMOGRAPH STATION

FIGURE 1.-Locations of primary USGS and NOAA seismograph stations.

cations of all earthquakes recorded throughout the world. They contain origin time, geographic coordinates, region of occurrence, felt and damage data, depth, magnitude, and other related information on each earthquake. The Preliminary Determination of Epicenters Monthly List ing, a chronological listing of the twice-weekly data, is available to the general public by subscription from the Government Printing Office.

Earthquake Data Report. This twice-weekly report contains data used in the computation of the report above, it lists station arrival times, individual distances, azimuths, and traveltime residuals.

In addition to these publications, the USGS publishes a bimonthly Earthquake Information Bulletin, which con tains information on past and continuing studies in seis mology and describes techniques used in the investigation of earthquakes and related phenomena. This two-color magazine has regular departments for new publications, meetings, and current earthquake descriptions.

SEISMOLOGY COLLABORATORS

Active cooperation in earthquake investigations in the

Pacific Coast and Western Mountain States is provided by the University of California Seismographic Station at Berkeley and the California Institute of Technology Seis- mological Laboratory at Pasadena. Seismology col laborators throughout the U.S. assist in collecting earth quake data. The following served as collaborators to NOAA and USGS during 1974.

Alabama. L.J. Eisele, S.J., Spring Hill College, Mobile.

Arizona. Richard T. Moore, University of Arizona, Tucson.

California (at large). Nina Scott, San Francisco.California (northern). Bruce A. Bolt, University of

California, Berkeley.California (southern). Clarence R. Alien, California

Institute of Technology, Pasadena.Colorado. Maurice W. Major, Colorado School of

Mines, Golden.Connecticut. Edward F. Chiburis, University of

Connecticut, Groton.Delaware. Robert R. Jordan, University of Dela

ware, Newark.Florida and Georgia. Leland T. Long, Georgia Insti

tute of Technology, Atlanta, Ga.


Idaho. Melvin W. Jackson, Morrison-Knudsen Co., Inc., Industrial Engineering Group, Boise.

Indiana. Robert F. Blakely, Department of Natural Resources, Geological Survey, Bloomington.

Iowa. J. P. Kopp, Loras College, Dubuque.Kansas. Robert J. Harris, Kansas State University,

Manhattan.Kentucky. G. Randy Keller, University of Ken

tucky, Lexington.Michigan. James T. Wilson, University of

Michigan, Ann Arbor.Minnesota. Harold Mooney, University of Min

nesota, Minneapolis.Mississippi, Louisiana area. Fred Folio will, Univer

sity of Mississippi, University.Missouri, Illinois, Arkansas area. William J.

Stauder, S.J., Saint Louis University, Saint Louis.Montana. Stephen W. Nile, Gallatin Gateway.Nevada. Alien Ryall, University of Nevada, Reno.New England. Francis J. Donohoe, S.J., Daniel J.

Linehan, S.J., and James W. Skehan, S.J., Weston Col lege, Weston, Mass.

New Mexico. Allan R. Sanford, New Mexico Insti tute of Mining and Technology, Socorro.

New York. Marc L. Sbar, Lamont-Doherty Geologi cal Observatory, Palisades.

North Carolina. David M. Stewart, University of North Carolina, Chapel Hill.

Ohio. Edward J. Walter, John Carroll University, Cleveland.

Oklahoma. James E. Lawson, Jr., University of Ok lahoma, Leonard.

Oregon. Richard W. Couch, Oregon State Univer sity, Corvallis.

Pennsylvania. Benjamin F. Howell, Jr., Pennsyl vania State University, University Park.

South Carolina. Pradeep Talwani, University of South Carolina, Columbia.

Tennessee. Berlen C. Moneymaker, Knoxville.Texas. James Dorman, University of Texas, Galves-

ton.Utah. Kenneth Cook, University of Utah, Salt Lake

City.Virginia. G. A. Bollinger, Virginia Polytechnic In

stitute and State University, Blacksburg.Washington. Norman Rasmussen, University of

Washington, Seattle.West Virginia. R. W. Laird, West Virginia Univer

sity, Morgantown.Wisconsin. David E. Willis, University of Wiscon

sin, Milwaukee.

EPICENTER MAPS

Figure 2 is a plot of all earthquake epicenters listed in table 1. Each earthquake is indicated by a small dot.

Figure 3 is a computer plot of 1974 earthquakes by intensity. Maximum intensities are plotted in Arabic numerals at the location that each occurred. Earthquakes of int. 1-1V are represented by dots. Bulletins of the Uni versity of California Seismographic Station at Berkeley and the California Institute of Technology Seismological Laboratory at Pasadena should be consulted for additional details on epicenters in California.

The selection of intensity or "felt-area" maps (figs. 4-9) is governed largely by the size of the area affected, the minimum radius generally being about 80 km (50 miles). This means that sharp, localized shocks of inten sity VI (which occur mostly in California) may not be shown on such maps, whereas others of intensity V and VI (which occur largely in the Eastern and Central States) often will be illustrated. Numerals on these computer- plotted maps represent the maximum Mercalli intensities at each town.

MAGNITUDE AND INTENSITY RATINGS

Magnitude is a measure of the "size" of an earthquake and is roughly related to the energy release at its focus. Although the magnitude scale has neither' 'top'' nor' 'bot tom" values, the highest ever recorded was magnitude 8.9 and the lowest about 3. On this logarithmic scale, a magnitude 6 shallow-focus earthquake represents elastic-wave energy approximately 30 times greater than that generated by a magnitude 5 earthquake, 900 times greater than that of a magnitude 4 shock, etc. Many factors enter into the determination of earthquake mag nitude, including earthquake focal depth, frequency con tent of the sampled energy, and the earthquake radiation pattern. The magnitude values calculated by USGS in table 1 are based on the following formulae:

M= log (AIT) + 1.66 log D + 3.3, (1)

as adopted by the International Association of Seismology and Physics of the Earth's Interior (IASPEI; Bath, 1966,

Introduction

p. 153), where A is the maximum horizontal surface-wave ground amplitude, in micrometers; T is the period, in seconds, and 18< T<22, and/) is the distance in geocen tric degrees (station to epicenter) and 20° <D < 160°. No depth correction is made for depth less than 50 km.

m, = log (AIT) + Q(D,h), (2)

as defined by Gutenberg and Richter (1956), except that T, the period, in seconds, is restricted to 0.1<7<3.0, and A, the ground amplitude, in micrometers, is not necessarily the maximum of the P-wave group. Q is a function of distance D and depth h, where D> 5°.

ML = log/4-log/4Q (3)

as defined by Richter (1958, p. 340), where A is the maximum trace amplitude, in millimeters, written by a Wood-Anderson torsion seismometer, and log /40 is a standard value as a function of distance. ML values are also calculated from other seismometers by conversion of recorded ground motion to the expected response of the torsion seismometer.

m bL = 3.75+0.90 (log D)+log(/4/T) (4)

0.5°<£><4°,

mhTo = 3.30+1.66 (logD) + log (A/T)ULig

4°<£><30°,

as proposed by Nuttli (1973), where A/T is expressed in micrometers per second, calculated from the vertical- component 1 -second Lg waves, andD is the distance, in geocentric degrees.

References cited above are as follows:(1) Bath, Markus, 1966, Earthquake Energy and Mag

nitude, in Physics and Chemistry of the Earth, Vol. 7, Oxford and New York, Pergamon Press, pp. 115-165.

(2) Gutenberg, B. and Richter, C.F., 1956, Magnitude and Energy of Earthquakes, Annali di Geofisica, Vol. IX, No. 1, pp. 1-15.

(3) Richter, C.F., 1958, Elementary Seismology, San Francisco, Calif., W.H. Freeman and Co., Inc.,

pp. 768.(4) Nuttli, O.W., 1973, Seismic Wave Attenuation

and Magnitude Relations for Eastern North America, Jour. Geophys. Res., Vol. 78, No. 5, pp. 876-885.

The term intensity as applied to earthquakes represents a quantity determined from the effects on people, man- made objects, and the Earth's surface (landslides, ground fissures, etc.). Intensities are assigned according to the descriptions listed in the Modified Mercalli (MM) Inten sity Scale of 1931 (Wood and Neumann, 1931; see next section). There are 12 steps to the MM scale; these are discrete steps, which is the reason Roman rather than Arabic numerals are used. An earthquake in a populated area will have different intensities at different localities, owing to the distance from the epicenter of the earth quake, local geological conditions, structural design of buildings, and the magnitude of the earthquake.

The text of this publication gives the intensity for each city where the earthquake was felt and summaries of the strongest effects reported. Each earthquake is further characterized by its maximum intensity, and this is given in the text and in table 1.

Although it is recognized that the Modified Mercalli Intensity Scale is in many instances inadequate for present-day requirements, it has been the guide used by NOAA and the USGS and will continue to be so used until a new scale has been devised and has acceptance in the engineering and seismological communities. As stated above, intensities on the MM scale are discrete numbers. However, bracketed intensities (e.g., VII-VIII) have been used in some cases in the past to describe the effects of earthquakes where the evidence for the higher intensity is less clear. This practice has been abandoned for current earthquakes. For historical earthquakes, questions con cerning the interpretation of intensities in such cases or in cases where new data may point to a different maximum intensity should be referred to USGS.

MODIFIED MERCALLI INTENSITY SCALE OF 1931

NOAA's National Geophysical and Solar-Terrestrial Data Center and the USGS report all intensities on the Modified Mercalli Intensity Scale of 1931. 1 The abridged version of this scale is given below. Values in parentheses are equivalent intensities on the Rossi-Forel Scale, which is still used in some countries to evaluate earthquake effects.

ABRIDGED

I. Not felt except by a very few under specially favorable circumstances. (I)

'Wood. Harry O. and Neumann, Frank, 1931, Modified Mercalli Intensity Scale of 1931, Bulletin of the Seismological Society of America, Vol. 21, No. 4, pp. 277-283.

Introduction


II. Felt only by a few persons at rest, especially on upper floors of buildings. Delicately sus pended objects may swing. (I to II)

III. Felt quite noticeably indoors, especially on upper floors of buildings, but many people do not recognize it as an earthquake. Standing motorcars may rock slightly. Vibration like passing of truck. Duration estimated. (Ill)

IV. During the day, felt indoors by many, outdoors by few. At night, some awakened. Dishes, win dows, doors disturbed; walls make creaking sound. Sensation like heavy truck striking building. Standing motorcars rocked noticeably. (IV to V)

V. Felt by nearly everyone, many awakened. Some dishes, windows, etc., broken; a few instances of cracked plaster, unstable objects overturned. Disturbances of trees, poles, and other tall ob jects sometimes noticed. Pendulum clocks may stop. (V to VI)

VI. Felt by all, many frightened and run outdoors. Some heavy furniture moved; a few instances of fallen plaster or damaged chimneys. Damage slight. (VI to VII)

VII. Everybody runs outdoors. Damage negligible in buildings of good design and construction; slight to moderate in well-built ordinary struc tures; considerable in poorly built or badly designed structures; some chimneys broken. Noticed by persons driving motorcars. (VIII )

VIII. Damage slight in specially designed structures; considerable in ordinary, substantial buildings, with partial collapse; great in poorly built structures. Panel walls thrown out of frame structures. Fall of chimneys, factory stacks, columns, monuments, walls. Heavy furniture overturned. Sand and mud ejected in small amounts. Changes in well water. Persons driving motorcars disturbed. (VIII+ to IX )

IX. Damage considerable in specially designed structures; well-designed frame structures thrown out of plumb; great in substantial buildings, with partial collapse. Buildings shifted off foundations. Ground cracked con spicuously. Underground pipes broken. (IX+)

X. Some well-built wooden structures destroyed; most masonry and frame structures destroyed with their foundations; ground badly cracked. Rails bent. Landslides considerable from river banks and steep slopes. Shifted sand and mud. Water splashed (slopped) over banks. (X)

XI. Few, if any, (masonry) structures remain standing. Bridges destroyed. Broad fissures in ground. Underground pipelines completely out of service. Earth slumps and land slips in soft ground. Rails bent greatly.

XII. Damage total. Waves seen on ground surfaces. Lines of sight and level distorted. Objects thrown upward into air.

Earthquake Descriptions

INTRODUCTION

The times of earthquake occurrences in the 11 regions that follow table 1 are given in standard time. Times are expressed continuously from midnight to midnight, or 0 to 24 hours. Greenwich mean times are given in parenthe ses, following standard (local) times, for earthquakes with instrumental epicenters. The following symbols are used to indicate authority for arrival or origin times, epi centers, and/or magnitudes. Magnitudes are given only for earthquake listings without epicenters. Refer to table 1 for magnitudes determined for listings with instrumental epicenters.

ADK NOAA, Adak Observatory, Adak, Alaska.B Seismographic Station, University of California,

Berkeley.BLA Virginia Polytechnic Institute and State Uni

versity, Blacksburg.COL U.S. Geological Survey, College Observatory,

College, Alaska.CON University of Connecticut, Groton.CPO U.S. Geological Survey, Cumberland Plateau

Observatory, McMinnville, Tenn.CSC University of South Carolina, Columbia.L Lamont-Doherty Geological Observatory,

Palisades, N.Y.

NED Delaware Geological Survey, University of Delaware, Newark.

P Seismological Laboratory, California Institute of Technology, Pasadena.

PMR NOAA, Palmer Observatory, Palmer, Alaska.S University of Washington, Seattle.SLC University of Nevada, Salt Lake City.SLM Department of Earth and Atmospheric Sci

ences, Saint Louis University.TUL University of Oklahoma, Leonard.USGS U.S. Geological Survey, Golden, Colo.Roman numerals in the earthquake descriptions refer to

the Modified Mercalli Intensity Scale of 1931 (see page 6), which gives about equal weight to the disturbance of

inanimate objects and to personal reactions. When more than one degree of intensity is reported from a town, the town is assigned the highest intensity reported. Omission of an intensity rating indicates insufficient data. For brev ity, intensity is abbreviated int. in the descriptions that follow.

Table 1, which follows the next section, is a chronolog ical listing of all earthquakes and related phenomena lo cated in the U.S. region in 1974. It contains the follow ing information: date/origin time (GMT), geographic lo cation, region of occurrence, intensity, depth, and magnitude(s) computed. Only those earthquakes with in tensity designations are described in the 11 regions im mediately following table 1. Several instrumentally lo cated earthquakes described in the text are not listed in table 1, as they were reported to NGSDC after the table was prepared. Earthquakes that were not located instru mentally also do not appear in table 1.

SUMMARY OF EARTHQUAKE ACTIVITY

This is a summary of earthquake intensities by region. If no intensity is cited, the intensity is I to III on the Modified Mercalli Intensity Scale of 1931. Intensity II has arbitrarily been assigned to most of these events in table 1. Numbers in parentheses indicate the number of earth quakes occurring on that date.

NORTHEASTERN REGIONNew York: June 7, VI. Rhode Island: Oct. 1, II.

EASTERN REGIONAlabama: Dec. 10, V.Delaware: Apr. 28, IV. 29 (2).Georgia: Aug. 2, V. Felt South Carolina earthquake of

10 United States Earthquakes, 1974

Nov. 22, III.Kentucky: Felt Illinois earthquake of Apr. 3, V. Felt

Missouri earthquake of May 13, IV.North Carolina: May 16. Felt Georgia earthquake of

Aug. 2. Felt South Carolina earthquake of Nov. 22, IV. Dec. 9 (2).

South Carolina: Felt Georgia earthquake of Aug. 2, V. Oct. 8; 28, IV. Nov. 4, II; 7, IV; 22, VI. Dec. 3, II.

Tennessee (East): Jan. 11, II.Virginia: Felt Illinois earthquake of Apr. 3. May 30, V.West Virginia: Felt Virginia earthquake of May 30, V.

Sept. 28 (felt only in Ohio). Oct. 20, V.

CENTRAL REGIONArkansas: Felt Tennessee earthquake of Jan. 7. Feb.

15, V; 15 (2), II. Felt Illinois earthquake of Apr. 3. Felt Missouri earthquake of May 13, IV. Dec. 12, V. Dec. 25,II.

Illinois: Felt Tennessee earthquake of Jan. 7. Mar. 27,II. Apr. 3, VI. Felt Missouri earthquake of May 13. June 5,-V. Aug. 22, IV.

Indiana: Felt Illinois earthquake of Apr. 3, VI. Nov. 25, II.

Iowa: Jan. 7, IV. Felt Illinois earthquake of Apr. 3, IV.Kansas: Felt Texas earthquake of Feb. 15, V.Michigan: Felt Illinois earthquake of Apr. 3, IV.Missouri: Felt Tennessee earthquake of Jan. 7, V. Felt

Illinois earthquake of Mar. 27, II and Apr. 3, V. Apr. 5,II. May 13, VI. Felt Illinois earthquake of June 5, V. Aug. 11, V.

Ohio: Felt Illinois earthquake of Apr. 3, V. Felt West Virginia earthquakes of Sept. 28. II and Oct. 20, V.

Oklahoma: Felt Texas earthquake of Feb. 15, V. Dec. 15, III.

Tennessee (West): Jan. 7, V. Felt Illinois earthquake of Apr. 3. Felt Missouri earthquake of May 13, V.

Texas: Feb. 15, V.Wisconsin: Felt Illinois earthquake of Apr. 3.

WESTERN MOUNTAIN REGIONArizona: Felt California-Mexico border area earth

quake of Dec. 6. Dec. 19, III. Dec. 23, II.Colorado: Mar. 31, II.Montana: June 8, II. July 15, V. Felt Wyoming earth

quake of Aug. 30. Aug. 30(5), II. Sept. 1 (18). Oct. 19, II.

Nevada: Mar. 18, II; 18, IV; 18.Utah: Mar. 9, II. Apr. 16; 28, II; 29, II. Nov. 4, II.

Dec. 28, IV.Wyoming: Felt Montana earthquake of June 8. Aug. 30,

V. Sept. 19, V. Oct. 17-20 (numerous), II. Oct. 22, IV. Nov. 27, III. Dec. 1, II.

CALIFORNIA AND WESTERN NEVADACalifornia: Int. V and above. Jan. 6, VI; 10, V; 23, V;

30, V. Mar. 8, V; 12, V; 21, VI; 24, V; 31, V. Apr. 8, V. May 27, V. June 9. V; 12, V. July 2, V. Aug. 9, V; 14, V. Sept. 21, V. Oct. 22, V. Nov. 10, V; 28, VI. Dec. 6 (2), V; 29, V.

Nevada (Western): May 29, II.

WASHINGTON AND OREGONOregon: Dec. 12, IV.Washington: Apr. 19, V. May 16, V; 22, II; 24, II. July

14, IV; 28, IV. Aug. 15, II. Nov. 1. II; 30, II. Felt Oregon earthquake of Dec. 12, III. Dec. 15, V; 15, III.

ALASKAInt. V and above. Jan. 24, V. Feb. 4, V; 5, V. Apr. 5

(2), V.July 13, V;29, V. Aug. 12, V. Sept. 9, V; 11, V. Nov. 10, V; 14, V. Dec. 29 (2), V.

HAWAIIInt. V and above. Feb. 4, V. June 19, V. Dec. 15, V;

31, V.

PANAMA CANAL ZONEDec. 19.

PUERTO RicoFelt Dominican Republic earthquake of Jan. 18. Mar.

16. Aug. 29. Oct. 8, V; 26.

NORTHEASTERN REGION[Time given in this region is eastern standard. If an epicenter is

quoted, Greenwich mean time is given in parentheses. This region includes Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, and Vermont.]

June 7. 14:45:36.8 (19:45). Epicenter 41.57° N., 73.94° W., New York, at a depth of about 2 km, L. Int. VI. Minor damage (broken windows) was reported in Wappingers Falls area. The press reported a bookcase toppled in one home. Over 100 aftershocks were recorded in the 6-day period following the earthquake. A complete report has been published by Pomeroy, et al. (1976)*.

Oct. 1. 01:36:21 (06:36). Epicenter 41.66°N., 71.55° W., southern New England, vicinity of West Warwick, R.I., CON. Int. II in the Coventry-West Warwick, R.I., area.

Pomerov. P W . Smipson. D W . and Shar. M L . 1976. The Wappingers Falls Earthquake ot Juno 7. ]974 and Its Aftershocks. Hiil/t-nn t>l the Sci\mt>lf>t>nul S<» u-t\- of Amrnta. Vol. 66.

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14United States Earthquakes, 1974

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TABLE

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LOCATIONS OF EARTHQUAKES AND RELATED PHENOMENA THAT OCCURRED IN TH

E UNITED STATES DURING 197«»

- CONTINUED

DATE

GEOGRAPHIC

ORIGIN TIME

COORDINATES

G.M

, H

M

IAR

"IA

R

IAR

1AR

1AR

1AR

1AP

IAR

IAR

UP

1AR

1AR

1AR

1AR

IAR

!AP

IAR

IAR

IAR

IAP

!AR

!AR

15

16

16

16

16

17

17

IB 18

IB 19

20

21

21

21

21

22

22

22

22

23

23

20

12

13

15

16

l«f

15

07

12

12

11

15

11

21

22

23

01

05

07

07

09

17

27

02

11

57

2k

55

30

57

1*»

5«»

53

35

<»1

16

50

01

23

t*5

Ok

«»9

<t6 36

,T.

S

30

.

02.

1<».

«fl.

21.

16

.

36

.

53

.

26.

57

.

0<».

58

.

36

.

05

.

05

.

30.

56.

19.

06

.

55

.

33

.

<f7

.

8 3 8 B 1 i* if 6 0 0 6 6 6 3 7 9 3 0 2 1 B 0

LA

T.

DE

G.

65.

18

.

52

.

<tO

.

37

.

57.

58.

18.

<tO

.

*»0

.

60

.

52

.

66.

38.

3<

t.

61.

51

.

53.

53

.

61.

38

.

30

.

57N

<t5N

20

N

3<tN

DO

N

36

N

02

N

37

N

17N

20

N

62

N

36N

1BN

60 N

15

N

70

N

91 N

70N

62

N

0<»N

92N

35

N

LO

NG

. D

EG

.

151.

06

7.

179.

12<

».

12

1.

152.

i«f5

.

06

8.

116.

11

6.

152.

17

1.

!<*<

».

122.

117.

150.

16B

.

163.

16

3.

1«»7

.

07

7.

11

3.

72W

05W

50

E

72 W

7<»W

96W

76W

<t9H

70W

58W

75 W

99W

BOW

66 W

<»7W

93 H

36M

*»3W

37H

36 H

78H

83 H

REGION

ALASKA

MONA PASSAGE

RAT ISLANDS, ALEUTIAN ISLANDS

NEAR COAST OF NORTHERN CALIF.

CENTRAL CALIFORNIA


GULF OF ALASKA

MONA PASSAGE

NEVADA

NEVADA

SO

UT

HE

RN

A

LA

SK

A

ANDREANOF ISLANDS, ALEUTIAN IS.

ALASKA

NORTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN ALASKA


UNIMAK ISLAND REGION


SOUTHERN ALASKA

VIRGINIA

GU

LF

OF

CA

LIF

OR

NIA

RE

MA

RK

S/M

M-I

NT

EN

SIT

Y

DE

PT

H

KH

DAMAGE

USGS

MAGNITUDE*

MB

MS

ML

OTHER

MAGNITUDE**

II Itf IV II VI

IV

02

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3.6

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3.6

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NR

R

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<f.

!NR

R

>^- 5'

3.3

BR

K

3.0

PA

S

3.3

PM

R

2 .

5 8

L A

SEE FOOTNOTES AT

END OF TABLE

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TABLE 1

- LOCATIONS OF EARTHQUAKES AND RELATED PHENOMENA THAT OCCURRED IN THE UNITED STATES DURING 197* - CONTINUED

DA

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TABLE 1

- LOCATIONS OF EARTHQUAKES AND RELATED PHENOMENA THAT OCCURRED IN THE UNITED STATES DURING 197<»

- CONTINUED

DATE

GEOGRAPHIC

OPIGIN TIME

COORDINATES

RE

GIO

N

G.M

,H

M

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

JUL

26

26

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27

27

27

28

28

29

29

30

30 30

30

30

30

30

30

30

30

31

31

05

20

23

05

11

18

12

21

03

11

07

07

07

07

08

08

09

10

10

12

01

07

28

37

36

18

^ 20

5*

56

28

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51

36

53

07

22

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15.

17

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03

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59.

51.

52

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12.

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61

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RE

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MONTANA

CENTRAL ALASKA

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RAT ISLANDS* ALEUTIAN ISLANDS

CENTRAL ALASKA

CENTRAL ALASKA

WASHINGTON

SOUTHERN ALASKA

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SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

SOUTHERN CALIFORNIA

CENTRAL CALIFORNIA

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MAGNITUDE*

MB

MS

ML

OTHER

MAGNITUDE**

03

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1 -

LOCATIONS OF

EARTHQUAKES AND RELATED PHENOMENA THAT OCCURRED IN TH

E UNITED STATES DURING 1974 - CONTINUED

OA

TE

GE

OG

RA

PH

IC

OR

IGIN

T

IHE

C

OO

RD

INA

TE

S

G.H

.T.

H H

SL

ftT

. D

EG

.L

ON

G.

DE

C.

RE

GIO

NR

EM

AR

KS

/MH

-IN

TE

NS

ITY

D

EP

TH

USGS

MAGNITUDE'

MB

M

S M

L

OT

HE

R

MA

GN

ITU

DE

*4

AN

01

07

2

* <

»8.2

19.2

8N

155.3

9M

H

AW

AII

AN

0

1

07

<»

1 5t.

O

19

.26

N

155.3

5M

H

AW

AII

III

III

005

005

10TE:

Hawaii eart

hqua

kes

of J

an 01 (G

MT)

occurred De

c 31,

1974,

local

time.

'USG

S magnitudes ar

e as fo

llow

s:MB

--

Computed fr

om b

ody

wave

on

seismogram.

MS --

Co

mput

ed fr

om s

urfa

ce w

ave

on seismogram.

ML -- Computed o

nly

for

loca

l ea

rthq

uake

s we

st o

f the

Rock

y Mo

unta

ins.

The

magnitudes

unde

r the

ML column can

be e

ithe

r ML

or

MBLG

(east

of t

he R

ocky

Mou

ntai

ns).

''Ab

brev

iati

ons

following

magn

itud

e va

lues

are

as follows:

ADK

-- N

OAA, Ad

ak o

bser

vato

ry,

Adak

, AK.

BLA

-- V

irginia

Polytechnic

institute

and

Stat

e University,

Blac

ksbu

rg,

VA.

BRK

-- University o

f California,

Berk

eley

, CA

.CO

N --

University o

f Co

nnec

ticu

t, Groton,

CT.

NRR

-- University o

f Nevada,

Nort

h Reno,

NV.

PAS

-- California In

stit

ute

of T

echnology, Pa

sade

na,

CA.

PMR

-- N

OAA,

Palmer O

bser

vato

ry,

Palm

er,

AK.

SEA

-- University o

f Wa

shin

gton

, Seattle, WA.

SLM

-- Dept.

of E

arth

an

d At

mosp

heri

c Sc

ienc

es,

Sain

t Louis

University,

Sain

t Louis, MO.

Note

: Ma

gnit

ude

valu

es un

der

this co

lumn

(Other M

agnitudes) generally

are

ML.

However,

for

precise

information

on th

ese

valu

es,

refe

r to th

e USGS PD

E re

port

s.

c: !? sx

Earthquake Descriptions (East) 53

EASTERN REGION

[Time given in this region is eastern standard. If an epicenter is quoted, Greenwich mean time is given in parentheses. This region in cludes Alabama, Delaware, Florida, Georgia, Kentucky (eastern), Maryland, Mississippi (eastern), New Jersey, North Carolina, Pennsyl vania, South Carolina, Tennessee (eastern), Virginia, Washington, D.C., and West Virginia.]

Jan. 11. 12:42:11.5, CPO. McMinnville, Tenn. Int. II. Felt by some.

Apr. 28. 09:19:20, NED. Wilmington, Del. Int. IV. Pictures shifted; windows, doors, and dishes rattled. Gen erally felt in the southwestern part of Wilmington. Possi ble aftershocks on Apr. 29 at 12:30 and 17:55.

May 16. During the day. North Carolina Mountains. Felt in Brevard, Hendersonville, and Waynesville, N.C. Not recorded by seismographs in area.

May 30. 16:28:37.2 (21:28). Epicenter 37.38° N., 80.42° W., Virginia, at a depth of 8 km, BLA. Felt over 5,400 km2 (2,084 mi2 ) of southwestern Virginia and southeastern West Virginia. Int. V. No damage occurred, but small objects shifted, residents were frightened, and houses and windows rattled.

INT. V IN WEST VIRGINIA

Gap Mills and Pickaway.INT. V IN VIRGINIA

Belspring, Kimballton, Lafayette, and Pembroke.INT. IV IN WEST VIRGINIA

Alderson, Lindside, Sarton, Union, and Waiteville.INT. IV IN VIRGINIA

Catawba, Fincastle, New Castle, Newport, and Rip- plemead.

INT. Mil IN WEST VIRGINIA

Cucumber, Dingess, Drennen, Forest Hill, Gary, Greenville, Meadow Bridge, Peterstown, Sweet Springs, and Willow Bend.

INT. I-III IN VIRGINIA

Blairs, Eggleston, Emory, Glen Lyn, Paint Bank, Roanoke, and Vansant.

Aug. 2. 03:52:09.8 (08:52). Epicenter 33.87° N., 82.49° W., Georgia, at a depth of 1 km, USGS. Int. V. Felt over 36,400 km2 (14,000 mi2 ) of Georgia, North Carolina, and South Carolina (see fig. 4). Slight damage was reported 1 km north of Bobby Brown State Park, Ga.

INT. V IN GEORGIA

Boneville, Conyers, Crawfordville, Madison, Rayle, Robinson, Sharon, Toomsboro, Warrenton, and Washington.

INT. V IN SOUTH CAROLINA

Cross Hill, Hodges, and Parksville.

INT. IV IN GEORGIA

Appling, Augusta, Bethlehem, Bishop, Bowman, Buford, Canon, Carlton, Crawford, Culloden, Davis- boro, Dearing, Demorest, Dewy Rose, Evans, Experi ment, Farmington, Gibson, Gillsville, Greensboro, Grovetown, Haddock, Hardwick, Harlem, Indian Springs, Kelly, Lexington, Lincolnton, Mansfield, Mar- tinez, Mitchell, Monticello, Norwood, Oxford, Penfield, Philomath, Round Oak, Shady Dale, Social Circle, Statham, Thomson, Union Point, White Plains, and Zebu- Ion.

INT. IV IN SOUTH CAROLINA

Abbeville, Aiken, Bath, Blair, Calhoun Falls, Clarks Hill, Graniteville, Greenwood, Johnston, Lowndesville, McCormick, Modoc, Mount Carmel, New Ellenton, Ninety Six, Plum Branch, Saluda, Warrenville, and Wil- lington.

INT. I-IH IN GEORGIA

Arnoldsville, Atlanta (press), Avera, Avondale, Bonaire, Bostwick, Covington, Elberton, Fry, Gough, Gracewood, Gwinnett, Hartwell, Hephzibah, Macon (press), Marietta, Mayfield, Rutledge, Stonewall, Thomaston (press), Vanna, and Winterville.

INT. I-IH IN NORTH CAROLINA

Hayesville and Union Mills.

Aug 2 1974 0352098 EST Magnitude 43 (M b )

1f Earthquake epicenter

5 Modified Mercalli intensity

Earthquake was not felt

SCALE BO

FIGURE 4.-Area affected by Georgia earthquake of August 2.


INT. ll-lll IN SOUTH CAROLINA

Belton, Edgemoor, Lexington, North Augusta, and Ridge Spring.

Oct. 8. 18:22:28. Clark Hill Reservoir, S.C. Mag. 3.1 (m b ). Reported felt at Bordeaux and Willington. Re corded at a temporary station at Clark Hill Reservoir.

Oct. 20. 10:13:55.1 (15:13). Epicenter 39.10° N., 81.59° W., West Virginia, at a depth of 11 km, USGS. Int. V. Felt over a small area of southeastern Ohio and northwestern West Virginia. A Parkersburg, W. Va., resident reported "cracked plaster and articles toppling from shelves." Int. V effects also occurred at Ravens- wood, W. Va., and Belpre, Ohio; int. IV in West Virginia at Belleville, Cottageville, New Haven, and Morgantown (press); in Ohio at Athens, Coolville, Hockingport, and Nelsonville; int. II-III in Ohio at Marietta, Pomeroy, Reedsville, Stockport, and Vincent.

Oct. 28. 07:33 (12:33). Macroseismic location 33.79° N., 81.92° W., South Carolina, CSC. Int. IV at Edgefield, Johnston, and Trenton. NOTE: This epicenter is not listed in table 1 of this publication.

Nov. 4. 22:00 (Nov. 5. 03:00). Macroseismic location 33.73°N., 82.22°W., South Carolina area, CSC. Int. II at Clark Hill Dam, McCormick, Modoc, and Parksville. NOTE: This epicenter is not listed in table 1 of this publication.

Nov. 7. 16:31:04.5 (21:32). Macroseismic epicenter 37.75°N., 78.20°W., central Virginia, mag. 2.4, BLA. Int. IV. Felt near Cartersville, Columbia, Cumberland (near), Georges Tavern (north of), Goochland (near), and Palmyra. NOTE: This epicenter is not listed in table 1 of this publication.

Nov. 22. 00:25:55.5 (05:25). Epicenter 32.90° N., 80.15° W., South Carolina, at a depth of 18 km, USGS. Int. VI. Felt over approximately 130,000 km 2 (50,000 mi2 ) of South Carolina, North Carolina, and Georgia (one town) (see fig. 5). The following has been excerpted from an unpublished report prepared by A. Benson, Law En gineering Co., Marietta, Ga., who visted the epicentral area: "The initial stop was Saint Philip's Cathedral lo cated in downtown Charleston. Both the interior and the exterior of the church displayed radial cracks extending from the apex of the arches over the outside wall win dows. Several cracks within the building prior to the earthquake were either enlarged or lengthened following the November 22 event. The cracks extended upward through interior trim and supporting members of the church roof. In the church rectory located approximately three blocks south, the ceiling of the first-floor living room had separated from the wall approximately '/2 inch.

Damage both in the church and in the rectory was located predominately on the south side of the buildings.

"Examinations of the older buildings immediately adjacent and surrounding the Saint Philip's area revealed that many display extensive cracking of the walls. It was not possible to determine if these cracks were the result of earthquake damage, either of the latest event or previous event or the result of foundation settlement.

"The most significant [damage] occurred in the Northwood Estates area of north Charleston. There were two reports in this area consisting of a new subdivision of ranch style brick homes, slab on grade. The most extensive damage was observed at the residence of A.W. Powell. Mrs. Powell reported cracked bricks in the brick veneer of the house, stretched steel railings along the outside of the house, fresh cracks in the driveway and sidewalk, and an outside decorative brick wall which had separated from the house. The damage appeared to be legitimate. The cracked bricks were in an area of the house where they had previously experienced foundation settlement. The set tlement cracks resulting from these problems were evi dent. However, the fresh cracks through the individual bricks were apparently related to the earthquake. A sec ond home approximately three blocks from the Powell residence also reported cracked brick. Once again this home had previously experienced foundation settlements. However, as before, the cracks through the bricks were fresh, distinct, and definitely related to the earthquake by the owners. Additional damage reported in Charleston consisted of reports of cracked plaster, minor masonry damage, such as cracked driveways and sidewalks, and repeated reports of heavy objects such as refrigerators and beds being moved and displaced during the earthquake. The repeatability of these damage reports seems to indi cate that they are valid, and these occurrences are defi nitely earthquake related.

"Damage reports from the Summerville, South Carolina, area were similar to those encountered in Char leston. We investigated four reported damage cases in the Summerville area. The damage typically consisted of cracked concrete block footings, a broken windowpane, and the movement of heavy objects in homes during the earthquake. As we encountered in Charleston these events all bear similar traits and appear to be related to the earthquake."

INT. VI IN SOUTH CAROLINA

Charleston (Northwood Estates, 8431 Deerwood Dr.). Felt by and awakened many in community; fright ened all. Floor pole lamp shifted. Outside wall cracked

Earthquake Descriptions (East)

81

NORTH CAROLINA

3 4

GEORGIA

Nov. 22. 1974, 00:25.55.5 EST Magnitude 4.7

Earthquake epicenter

5 Modified Mercalli intensity

Earthquake was not felt Atlantic Ocean

0 SCAlt 50iiit *

FIGURE 5.-Area affected b\ South Carolina earthquake of November 22.


from ceiling to ground. "A crack (previously repaired) reopened to ground. Brick loosened. Slight cracks in sidewalks. Caulking on south side of building cracked and railing stretched." Note: Field visit appears to confirm the described damage.

Charleston (Northwood Estates, 8327 Witsell St.). Awakened and frightened all in home. Dresser, beds, and freezer moved. Bricks cracked. Note: Field visit confirms damage.

Charleston (1 Live Oak-Ashley Forest). Awakened and frightened all in home. "Bed furniture moved approx imately 6 inches from east wall."

Charleston Air Force Base (Barracks 248). Awakened and frightened all. "Everything rat tled." Plaster cracked. Damage slight. "Friends on third floor became so frightened they evacuated."

Ladson (General Electric Plant). Many frightened at work. "Moved turbine parts that were bolted to beds. A 500-ton machine tool jumped around on its bed." Dam age slight.

Summerville (Oakdale Subdivision). Awakened and frightened all in home. Water in aquarium vibrated and shook. Enlarged patio cracks in concrete floor. Garage floor cracked at 1420 Wannamaker Drive. NOTE: Field visit confirms damage.

INT. V IN SOUTH CAROLINA

Awendaw, Barnwell (plaster cracked), Canadys (plas ter cracked), Cayce, Elgin, Gable, Georgetown (small cracks noted in some buildings), Goose Creek (furniture shifted, overturned, broken), Graniteville, Horatio, Kingstree (card table overturned), McClellanville, Meg- gett, Moncks Corner, Mount Holly, Myrtle Beach, Nichols, Ravenel, Russellville, Vaucluse, and Yonges Island.

INT. IV IN SOUTH CAROLINA

Aiken, Alvin, Bath, Bethune, Bishopville, Blackville, Cameron, Conway, Cordesville, Denmark, Edgefield, Elko, Elliott, Great Falls, Greeleyville, Isle of Palms, Jamestown, Johnsonville, Lamar, Manning, Marion, Mayesville, Neeses, Oswego, Pawleys Island, Peak, Rembert, Ridgeville, Round O, Saint Mathews, Salley, Santee, Scranton, Summerton, Swansea, and Trio.

INT. IV IN NORTH CAROLINA

Brunswick, Davidson, Gibson, and Lake Waccamaw.

INT. I-III IN SOUTH CAROLINA

Allendale, Blythewood, Chesterfield, Cottageville, Estill, Florence, Fort Motte, Gaston, Kershaw, Lyn- chburg, McBee, North Augusta, Mount Pleasant, Parksville, Parr, Plum Branch, Sheldon, Ulmers, War- renville, West Columbia, Williams, and Williston.

INT. Ill IN GEORGIA

Claxton.INT. II IN NORTH CAROLINA

Teacheys.Dec. 3. 03:25 (08:25). Macroseismic location 33.95°

N., 82.50° W., South Carolina, CSC. Int. II at Willing- ton, Bordeaux, and Hickory Knob State Park (possible aftershock of Aug. 2 event).

Dec. 9. 10:00, 13:40. Felt at Wilmington, N.C. Not recorded by seismographs, as nearest station is 200 km away.

1974. North Carolina-South Carolina area. David M. Stewart, Director, MacCarthy Geophysics Laboratory, University of North Carolina, Chapel Hill reports: "Persistent, audible, offshore microearthquakes are reported felt between Myrtle Beach, S.C., and Wrights- ville Beach, N.C., with most intense reports centered near Fort Fisher and Southport, N.C., on the point of Cape Fear. The frequency is about 1 per week and magnitudes are less than 1.0, usually less than 0.0. People in this area tell me that these persistent events have been going on for at least 10 years."

Dec. 10. 01:01:32.7 (06:01). Epicenter 31.35° N., 87.47° W., Alabama, at a depth of 10 km, USGS. Int. V at Huxford where small objects fell. Small canvass (about 8 towns).

CENTRAL REGION[Time given in this region is central standard. If an epicenter is quoted,

Greenwich mean time is given in parentheses. This region includes Arkansas, Colorado (eastern). Illinois, Indiana, Iowa, Kansas. Ken tucky (western), Louisiana. Michigan, Minnesota, Mississippi (west ern). Missouri, Nebraska. North Dakota, Ohio, Oklahoma, South Dakota, Tennessee (western), Texas (eastern), and Wisconsin.]

Jan. 7. 10:47. Des Moines, Iowa, area. Felt over approximately 2,340 km2 (900 mi2 ) of central Iowa. Int. IV effects were noted at Clive, Elkhart, Granger, and West Des Moines; int. Ill at Cambridge, the northernmost town in the felt area; int. II at Carlisle, Indianola (the southernmost point in the felt area), and Sheldahl. The USGS canvassed 69 towns in the region for intensity data. Of these, 55 reported the event "not felt," 8 felt, and 6 did not return the questionnaire. The disturbance was not recorded by seismographs in the area and may have been an explosion for bridge construction.

Jan. 7. 19:12:37.4 (Jan. 8, 01:12). Epicenter 36.20° N., 89.39° W., northwestern Tennessee region, at a depth of 1 km, SLM. Int. V. Felt over a small area of western Tennessee, southern Missouri, and at a few towns in southern Illinois and northeastern Arkansas. No damage

Earthquake Descriptions (Central) 57

occurred, but small objects shifted at Burfordville, Mo., and Dyersburg and Elbridge, Tenn. Dishes rolled off kitchen cabinet at Miston, Tenn. The USGS canvassed 500 towns in the region for intensity data. Of these 400 reported the earthquake was not felt and 61 did not return the questionnaire.

On Mar. 29, 1972, an earthquake located a few kilometers west of this epicenter (36.20°N., 89.61°W.) and with the same magnitude was felt over 171,000 km2 of six states and caused minor damage in Missouri and Kentucky.

INT. V IN MISSOURI

Burfordville.INT. V IN TENNESSEE

Bogota, Dyersburg, Elbridge, Hornbeak, Miston, and Ridgely.

INT. IV IN MISSOURI

Deering, Gobler, and Hayti.INT. IV IN TENNESSEE

Bradford, Darden, Dyer, Friendship, Obion, Samburg, and Tiptonville.

INT. Mil IN ARKANSAS

Keiser and McDougal.INT. Mil IN ILLINOIS

Perks and Royal ton.INT. Mil IN MISSOURI

Campbell, Caruthersville, Matthews, Oxly, and Steele.

INT. Mil IN TENNESSEE

Camden, Morris Chapel, Scotts Hill, Trimble, Troy, and Woodland Mills.

Feb. 15. 07:33:49.2 (13:33). Epicenter 36.50° N., 100.69°W., Texas Panhandle region, at a depth of 24 km, USGS. Int. V. Felt over about 37,000 km2 (14,282 mi 2 ) of northern Texas, northwestern Oklahoma, and south western Kansas (see fig. 6.). Slight damage in the form of cracks in plaster was reported at Booker, Darrouzett, and Perry ton, Tex., Texhoma and Woodward, Okla., and Liberal, Kans.

INT. V IN KANSAS

Liberal (press reported cracks in basement floor of Greenbriar Apartments) and Ulysses.

INT. V IN OKLAHOMA

Balko, Beaver, Forgan, Knowles, May, Texhoma (plaster cracked slightly; small objects fell), and Wood ward (plaster cracked in a few houses; wall decoration fell).

INT. V IN TEXAS

Booker ("few cracks opened in walls"), Darrouzett (some cracking of plaster), and Perryton (few broken

glasses; press reported "some walls were cracked").INT. IV IN KANSAS

Richfield and Rolla.INT. IV IN OKLAHOMA

Baker, Elmwood, Erick, Goodwell, Hardesty, Reydon, Rosston, Sweetwater, Turpin, Tyrone, and Vin- son.

INT. IV IN TEXAS

Briscoe (doubtful report of highway damage 1.6 km west of Briscoe on Highway 83, 125 km southeast of epicenter), Farnsworth, Glazier, Gruver, Lipscomb, Morse, Sanford, Spearman (press), Stinnett, Sunray, andWaka.

INT. Mil IN KANSAS

Ashland, Kismet, and Dodge City (press).INT. Mil IN OKLAHOMA

Adams, Buffalo, Camargo, Fargo, Fort Supply, Gate, Guymon, Hooker (press), Mayfield, Mutual, Optima, Sharon, and Shattuck.

INT. Mil IN TEXAS

Amarillo (press), Borger, Canadian (press), Dumas (press), Fritch, Masterson, and Pampa (press).

Feb. 15. 16:35:44.7 (22:35, foreshock), 16:49:01.8 (22:49, main shock), 16:53:02.2 (22:53, aftershock). Epicenters (1) 34.05° N., 93.13° W., (2) 33.96° N., 93.03° W., (3) 33.92° N., 93.02° W., Arkansas, all at a depth of 1 km, SLM. Int. V. The principal earthquake at 16:49 was felt over about 17,000 km2 (6,600 mi2) of southern Arkansas, from Little Rock in the north to Mag nolia on the south and from Texarkana on the west to Tinsman on the east. The foreschock and aftershock were observed by residents in several towns. The only damage occurred in Whelen Springs where plaster cracked in some buildings during the main tremor. A few small objects were shifted or shaken from shelves in Arkadel- phia, Bluff City, Donaldson, Gurdon, and Whelen Springs. Intensities are for the main earthquake at 16:49.

INT. V

Arkadelphia (3 shocks), Beirne (3 shocks, third the strongest), Bluff City, Donaldson, Gurdon (3 shocks), and Whelen Springs (3 shocks).

INT. IV

Emmet, Friendship, Leola (3 tremors), Malvern (2 tremors), Manning, Okolona, Ozan, Prescott, Sparkman, Tinsman, and Vaden.

INT. Mil

Bonnerdale, Cale, Camden (press), El Dorado (press), Harrell, Hope (press), Hot Springs (press), Little Rock, Mabelvale (press; 3 tremors), Magnolia (press), McCas- kill, Sheridan, and Texarkana (press; 2 shakes at munici pal airport).


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^ w^FIGURE 6.-Area affected by Texas Panhandle earthquake of February 15.

Mar. 27. 10:10:56.3 (16:10). Epicenter 38.55° N., 90.13° W., Illinois, at a depth of 10 km, SLM. Int. II in South and East Saint Louis, 111., and at Saint Louis, Mo.

Apr. 3. 17:05:02.5 (23:05). Epicenter 38.59° N., 88.09° W., southern Illinois, at a depth of 11 km, USGS. Int. VI. Felt over approximately 632,000 km2 (243,000 mi2) of all or parts of Arkansas, Illinois, Indiana, Iowa, Kentucky, Michigan, Missouri, Ohio, Tennessee, Vir ginia, and Wisconsin (see fig. 7). Minor damage, gener

ally in the form of cracked and broken chimneys, cracked walls and concrete floors, occurred at Hillsdale and Vel- pen, Ind., and Lancaster and West Salem, 111. Other types of slight damage (cracked plaster and windows princi pally) occurred at many towns throughout the two states. Doubtful reports of house foundations damage were re ceived from Cutler, Ind. (about 140 km northeast of the epicenter of the earthquake), and from Florence, Ky. (about 312 km east of the epicenter). NOTE: Tornadoes


FIGURE 7.-Area affected by southern Illinois earthquake of April 3.

passed through the area affected by the earthquake within an hour or so of the earthquake occurrence. Many of the reports probably have confused effects of the earthquake and those caused by the tornadoes.

INT. VI IN ILLINOIS

Lancaster. Felt by all and frightened many in com munity. Chimneys cracked; small objects shifted. Loud earth noises.

West Salem. Felt by and frightened all in home. "A few chimneys and tombstones were shaken down." At 301 N. Main, chimney was badly damaged. Few cans fell from shelves of service station. A chimney in north part of town was damaged badly owing to weak mortar. Another report noted that "one chimney overturned. Everything rattled. House shook all over. Loud roar."

INT. VI IN INDIANA

Hillsdale. Felt by many in community; frightened few. Sidewalk cracked. Concrete blocks cracked. Plaster cracked. Heavy metal closet moved 1 inch. Rumble heard.

Velpen. Felt by all and frightened few. Concrete floor, garage, and blocks cracked. Dishes and knick- knacks shifted, overturned, and fell. Slight damage.

INT. V IN ILLINOIS

Albion (cement cracked), Allendale, Alsey, Alvin, Armstrong, Astoria, Athens, Atwood, Belknap, Belle Rive, Belleville, Bellmont, Bingham, Bluff Springs, Bluford, Bone Gap, Bonnie, Bridgeport, Brimfield, Broadlands, Brocton, Brownstown, Burnt Prairie, Casey, Cerro Gordo, Claremont, Cobden, Collison, Colona,


Cornland, Dale, Decatur (press reported 50-ft. crack in basement wall on Windsor Rd. Wall full of hairline cracks), Dennison (basement walls cracked), Dewitt, Di- vernon, Dowell, Dundas, Edgewood, Ellery, (plaster cracked), El win, Emma, Enfield, Fairfield, Fairmount, Farmington, Fithian, Flat Rock, Fults, Galatia, Geff, Gibson City, Gifford, Goldengate, Goodfield, Good- wine, Grayville, Harristown, Hazel Dell, Hecker, Herald, Herscher, Hillsboro, Homer, Hoopeston, Hoyle- ton, Hutsonville, Ingraham, lola, Jewett, Keensburg, Kenney, Kilbourne, Kincaid, Kirkwood, La Cledge, Lake City, Lakewood, Lawrenceville, Literberry, Loogootee, Lovejoy, Mackinaw, Manchester, Marion, Martinsville, Mason, Mason City, Mattoon, McLeans- boro, Mechanicsburg, Melvin, Michael, Middletown, Milton, Minier, Mode, Monroe Center, Montrose, Mount Carmel, Mount Pulaski, Murdock, Neoga, New Holland, Nil wood, Noble, Nokomis, Oakdale, Oakley, Oakwood, Oblong, Odin, Ogden, Ohlman, Olivet, Olney, Onarga, Opdyke, Orchardville, Oreana, Owaneco, Palestine, Palmer, Palos Heights, Pana, Parkersburg, Pekin, Peoria, Pesotum, Petersburg, Philo, Plainview, Potomac, Radom, Redmon, Ridgway, Rinard, Robinson, Rock- port, Sailor Springs, Sainte Marie, St. Francisville, Saint Peter, Salem, Savoy, Shelbyville, Shobonier, Sidell, Sigel, Simpson (plaster cracked), Stewardson, Summer Hill, Tamaroa, Texico, Tolono, Tower Hill, Vermilion (few windows cracked), Virden, Virginia, Waggoner, Waltonville, Warrensburg, Watseka, Watson, Wayne, Wayne City, West Liberty, West York, Westville, Williamsville, Willow Hill, Winchester, Witt, and Xenia.

INT. V IN INDIANA

Advance (plaster cracked), Alamo, Amboy, Arlington, Attica, Bainbridge, Bethlehem, Bicknell, Blanford, Boggstown, Boonville, Bowling Green, Bridgeton, Brook, Brooklyn, Brookville, Brownsburg, Brownsville, Buffalo (plaster cracked), Buffaloville, Cambridge City, Camby, Cannelburg, Cedar Grove, Centerpoint, Center- ton, Centerville (walls cracked), Clay City, Clayton, Clinton, Cloverdaie, Coalmont, Commiskey, Conners- ville, Corydon, Craigville, Crandall, Crawfordsville, Cut ler (doubtful report that bricks dislodged from founda tion), Dale (plaster cracked), Danville, Decker, Delphi, Dublin, Eckerty, Edwardsport, Elizabeth, Elwood, Emi nence, Emison, Evansville, Fillmore, Forest, Fort Branch, Francisco, Freedom, Fremont, French Lick, Gas City, Glenwood, Grand View, Graysville, Greencastle, Greentown, Griffin, Gwynneville, Hatfield, Haubstadt, Hazleton, Hebron, Heltonville, Hemlock, Henryville, Holland, Indian Springs, Indianapolis, Inglefield, Jones-

ville, Judson, Kingman, Knightsville, Kokomo, Koleen, Kyana, Lapel, Lewis, Liberty, Lincoln City, Linton, Lynn, Mariah Hill, Mauckport, Medaryville, Medora, Mellott, Merom, Mexico, Monroe City, Monrovia (plas ter cracks enlarged), Montezuma, Morgantown, Mount Saint Francis, Mount Vernon, Muncie, Newburgh, New Goshen (concrete walks cracked), New Lebanon, New Market, New Middletown, New Palestine, New Ross, Newport, Newtown, Oakland City, Odon (faint plaster cracks), Otwell, Owensville, Oxford, Paragon, Patoka, Patricksburg, Paxton, Pimento, Pittsboro, Plainville, Po land, Prairie Creek, Princeton, Reelsville, Richland, Roachdale, Rockville, Rosedale, Rossville, Rusk, Rus- sellville, Saint Bemice (plaster cracked), Saint Meinrad, Salem, Sandbom, Sandford, Santa Claus, Scircleville, Scottsburg, Seymour, Sharpsville, Shelbyville, Shepardsville, Sheridan, Siberia, Solsberry, Spencer, Springport, Spurgeon, Star City, Staunton, Stendal, Stewartsville, Stilesville (slight plaster damage), Sulli van, Sweetser, Switz City, Tennyson, Terre Haute (slight plaster cracks), Universal, Urbana, Vallonia, Veeders- burg, Wallace, Washington, West Terre Haute, Westphalia, Westport, Whitestown, and Wilkinson.

INT. V IN KENTUCKY

Beech Grove, Clermont, Custer, Florence (dubious re port of damage to concrete foundation, 312 km east of epicenter), Harned, Lovelaceville, Manitou, McQuady, Milton, Mooleyville, Perry Park, Radcliff, Smith Mills, Sweeden, Waverly, Wax, West Point, and Whitesville.

INT. V IN MISSOURI

Foley, Mapaville, Morrison, and Normandy.INT. V IN OHIO

College Corner, Fort Recovery, and Seven Mile.INT. IV IN ILLINOIS

Allerton, Alma, Alto Pass, Annapolis, Arenzville, Ar thur, Ashmore, Atlanta, Ava, Barnhill, Season, Beaver- ville, Bellflower, Bement, Benld, Benton, Bible Grove, Birds, Blue Mound, Boles, Bonnie, Braidwood, Brough- ton, Browning, Browns, Bulpitt, Bunker Hill, Cache, Calhoun, Camargo, Campbell Hill, Canton, Carlinville, Carlyle, Carmi, Carriers Mills, Carrollton, Catlin, Champaign, Chatham, Chesterfield, Chrisman, Cisne, Clay City, Claytonville, Clinton, Coffeen, Colp, Colum bia, Cowden, Creal Springs, Cropsey, Crossville, Cur- ran, Cutler, Dahlgren, Danville, Dawson, De Land, Dewey, Dix, Donnellson, Donovan, Du Quoin, Eagar- ville, East Lynn, Eddyville, Edinburg, Edwardsville, Effingham, Eldorado, Elkhart, Emden, Energy, Equality, Evansville, Ewing, Farina, Farmersville, Fieldon, Fill- more, Findlay, Flora, Forrest, Forsyth, Frederick, Gar-


rett, Gays, Georgetown, Gillespie, Girard, Glenarm, Golconda, Goreville, Grand Chain, Green Valley, Green- field, Greenview, Greenville, Hagarstown, Hammond, Harco, Hardin, Hartford, Henning, Herrick, Herrin, Heyworth, Hidalgo, Highland, Hindsboro, Hume, Il linois City, Illiopolis, Indianola, Irving, Jacksonville. Janesville, Jerseyville, Johnston City, Jonesboro, Joppa, Junction, Kampsville, Kansas, Karbers Ridge, Kell, Kewanee, Kinmundy, Lake Fork, Langleyville, La Place, La Prairie, Lewistown, Logan, Long Point, Longview, Lostant, Louisville, Ludlow, Mahomet, Mansfield, Ma- pleton, Marine, Marissa, Marseilles, Marshall, Maryville, Mascoutah, Maunie, McLean, Metcalf, Mill Shoals, Modesto, Monticello, Morrisonville, Mounds, Mount Auburn, Mount Clare, Mount Erie, Mount Zion, Mulberry Grove, Muncie, Murrayville, New Athens, New Berlin, New Haven, Newman, Newton, Niantic, Norris City, Oconee, Omaha, Orient, Palmyra, Panama, Paris, Patoka, Pawnee, Paxton, Pearl, Penfield, Percy, Pinckneyville, Pinkstaff, Pittsburg, Piano, Pleasant Hill, Pulaski, Raleigh, Raymond, Red Bud, Ridge Farm, Riverton, Rockwood, Roodhouse, Rosamond, Rosiclare, Rossville, Royalton, St. Elmo, Saint Jacob, St. Joseph, Saint Libory, San Jose, Sandoval, Sawyerville, Scheller, Serena, Sesser, Shumway, Sidney, Sims, Smithton, Sorento, South Pekin, Springerton, Springfield, Staun- ton, Steeleville, Stonington, Stoy, Strasburg, Sullivan, Tallula, Tamms, Taylorville, Tennessee, Teutopolis, Thawville, Thayer, Tilden, Toledo, Towanda, Trenton, Troy, Troy Grove, Tuscola, Valier, Vandalia, Venedy, Walshville, Waynesville, Welge, West Union, West- field, Wheeler, Willisville, Willow Springs, Wyoming, and Yale.

INT. IV IN INDIANA

Albany, Ambia, Amo, Anderson, Andrews, Bargers- ville, Bedford, Bellmore, Bennington, Berne, Beverly Shores, Bippus, Birdseye, Bloomfield, Bloomington, Bradford, Brazil, Bristow, Bruceville, Buck Creek, Buckskin, Burlington, Butlerville, Cannelton, Carbon, Carlisle, Cartersburg, Gates, Cayuga, Celestine, Charles- town, Chesterton, Chrisney, Clarksville, Clifford, Coal City, Coatesville, Columbus, Converse, Cortland, Cory, Covington, Cynthiana, Daleville, Darlington, Derby, Dubois, Dugger, Edinburg, Elberfeld, Evanston, Fair banks, Farmersburg, Ferdinand, Flora, Floyds Knobs, Francesville, Freelandville, Freetown, Fulda, Geneva, Gentryville, Goodland, Goshen, Gosport, Greensboro, Greensburg, Greenville, Greenwood, Grovertown, Har mony, Hillisburg, Hillsboro, Huntingburg, Hymera, Ire land, Jasper, Kempton, Kentland, Kirklin, Knightstown, Ladoga, La Fontaine, Lafayette, Lebanon, Little York,

Lizton, Loogootee, Lynnville, Mackey, Magnet, Man illa, Marshall, Marshfield, Mays, McCordsville, Mecca, Metamora, Miami, Midland, Mitchell, Monroeville, Montgomery, Montmorenci, Morristown, Mulberry, Needham, New Harmony, New Haven, New Salisbury, New Whiteland, Newberry, Nineveh, Norman, Oak- town, Oolitic, Orestes, Orleans, Owensburg, Pence, Pendleton, Pennville, Petersburg, Portland, Poseyville, Prairieton, Quincy, Ragsdale, Remington, Richmond, Rockport, Rushville, Russiaville, Saint Anthony, Saint Croix, Saint Paul, Salanoia, San Pierre, Santa Claus, Schnellville, Scotland, Sedalia, Seelyville, Shelburn, Shoals, Silver Lake, Sims, Smithville, Somerville, Spice- land, Springville, Stanford, State Line, Stinesville, Sul phur Springs, Summitville, Swayzee, Talbot, Tell City, Tipton, Versailles, Vincennes, Wabash, Wadesville, Waldron, Walkerton, Warren, Warsaw, Waveland, Waynetown, West Baden Springs, West Lebanon, West- field, Westpoint, Wheatland, Williams, Williamsport, Willow Branch, Winslow, Wolflake, Woodburn, York- town, and Zionsville.

INT. IV IN IOWA

Danville, Ely, Fairfield, and Maquoketa.INT. IV IN KENTUCKY

Bagdad, Baskett, Beaver Dam, Big Clifty, Bon- nieville, Boston, Brooks, Burna, Calhoun, Caneyville, Carrollton, Carrsville, Cerulean, Clay, Cloverport, Con- stantine, Corydon, Dixon, Dundee, Eastview, Fordsville, Garfield, Glen Dean, Hampton, Hawesville, Henderson, Hudson, Leitchfield, Lewisport, Logansport, Lola, Louisville, Maceo, Madisonville, Magnolia, Maple Mount, Marion, Mason, Moorman, Mount Sterling, Nap- for, Olaton, Onton, Owensboro, Philpot, Poole, Pros pect, Reynolds Station, Rineyville, Rousseau, Salem, Saul, Scottsville, Sebree, Slaughters, Stanley, Stephensport, Symsonia, Uniontown, Valley Station, Vine Grove, Waco, Waddy, Warsaw, Wendover, West Louisville, Westview, Winston, and Yeaman.

INT. IV IN MICHIGAN

Kalamazoo, Marcellus, and Three Rivers.

INT. IV IN MISSOURI

Belleview, Braggadocio, Brazeau, Burfordville, Cape Girardeau, Doe Run, Dutchtown, Farrar, Flinthill, Fredericktown, Kelso, Kewanee, Mountain View, Per- kins, Pevely, Saint Albans, Scott City, Sedgewickville, Versailles, and Westalton.

INT. IV IN OHIO

Ansonia, Harbor View, Piqua, and Van Wert.INT. I-III IN ARKANSAS

Hunter and Wilson.


INT. I-III IN ILLINOIS

Addieville, Akin. Aledo, Alpha, Alton, Anna, Arcola, Armington, Arrowsmith, Ashton, Baldwin, Barry, Beardstown, Beckemeyer, Belleview, Berwick, Bethany, Blackstone, Bluffs, Brookfield, Brookport, Brownfield, Buckley, Buckner, Buncombe, Bureau, But ler, Cabery, Cambridge, Chicago, Carbon Cliff, Car- lock, Cave in Rock, Chambersburg, Chebanse, Christ opher, Cisco, Cissna Park, Coal City, Coello, Collins- ville, Colmar, Crescent City, Cypress,Dalton City, Dan- forth, Danvers, De Soto, Delavan, Dieterich, Dongola, Dorsey, Dow, Dubois, Dunfermline, Dupo, East Car- ondelet, East Moline, East Peoria, East St. Louis, Elizabethtown, Elmwood, Elwin, Fairbury, Fancy Prairie, Farmer City, Fidelity, Fisher, Flanagan, Foos- land, Freeport, Gale, Galesburg, Geneseo, Oilman, Glen Carbon, Good Hope, Grafton, Grand Tower, Grant Park, Hamburg, Harvel, Havana, Hazel Crest, Herod, Holder, Hppkins Park, Humboldt, Huntsville, Ipava, Irvington, Ivesdale, Kane, Keyesport, Kinsman, Lane, Latham, Le Roy, Lebanon, Lerna, Liberty, Lincoln, Litchfield, Liverpool, Lovington, Lowder, Lowpoint, Lyndon, Macedonia, Maquon, Matherville, McNabb, Merna, Mil- ford, Milmine, Modoc, Monee, Monmouth, Moweaqua, Muddy, Murphysboro, Nashville, Nebo, New Burnside, New Liberty, New Memphis, Olive Branch, Olmsted, Oraville, Paloma, Perks, Piasa, Pierron, Pierson Station, Plainville, Plato Center, Pleasant Plains, Plymouth, Pon- toosuc, Putnam, Rankin, Rantoul, Rardin, Reddick, Roberts,Rosebud, Royal, Rushville, St. Charles, Say- brook, Scottville, Seymour, Sheldon, Sherman, Shipman, Sibley, Sparta, Stonefort, Stronghurst, Summum, Tem ple Hill, Thomasboro, Time well, Toulon, Trilla, Tunnel Hill, Ullin, Utica, Valmeyer, Vergennes, Vernon, Villa Grove, Villa Park, Viola, Washington, Waterloo, Wel- don, Wellington, Westervelt, White Hall, Whittington, Williamson, Wolf Lake, Woodland, Woodlawn, Wor- den, and Wrights.

INT. I - 111 IN INDIANA

Akron, Alfordsville, Arcadia, Atlanta, Austin, Battle Ground, Beech Grove, Bentonville, Boone Grove, Branchville, Brownstown, Burrows, Cannelburg, Car- mel, Central, Chesterfield, Churubusco, Clarksburg, Claypool, Columbia City, Dana, Dayton, Demotte, Dillsboro, Dunkirk, Dyer, Fairmount, Flat Rock, Fon- tanet, Fort Ritner, Fort Wayne, Fowler, Fowlerton, Frankfort, Frankton, Galveston, Goldsmith, Grantsburg, Greenfield, Hall, Hanna, Hardinsburg, Harrodsburg, Hartford City, Hartsville, Helmer, Helmsburg, Hoag- land, Hobbs, Homer, Hope, Huron, Idaville, Ingalls,

Jamestown, Jasonville, Kouts, Kurtz, Laketon, Lanes- ville, Laurel, Leipsic, Leopold, Leroy, Linn Grove, Mar ion, Martinsville, Matthews, Maxwell, Milton, Mont- pelier, Nebraska, New Lisbon, New Washington, Nob- lesville, North Salem, North Vernon, Oakford, Oakville, Onward, Ora, Palmyra, Paoli, Paris Crossing, Parker, Pekin, Pershing, Peru, Poneto, Raub, Reynolds, Ridgeville, Roann, Rockfield, Rome, Rome City, Schneider, Scipio, Sellersburg, Selma, Somerset, South Whitley, Spencerville, Stockwell, Thorntown, Tip- pecanoe, Tobinsport, Trafalgar, Troy, Tyner, Under wood, Uniondale, Unionville, Van Buren, Vernon, Webster, West Lafayette, Williamsburg, Winamac, Winona Lake, Wolcott, Wolcottville, Worthington, Yeoman, and Zanesville.

INT. I - III IN IOWA

Atalissa, Baldwin, Bloomfield, Burlington, Clinton, Davenport, Dubuque, Fort Madison, Keokuk, Mediapolis, Preston, Sunbury, Vining, and Winfield.

INT. I - HI IN KENTUCKY

Auburn, Belton, Bandana, Beechmont, Berrys Lick, Bethany, Blandville, Bowen, Browder, Burlington, Centertown, Clarkson, Cooperative, Crayne, Cub Run, Echols, Eddy ville, Elliston, Fairdale, Fairfield, Falls of Rough, Farmers, Fort Knox, Guston, Hadley, Harold, Hartford, Hickory, Hueysville, Ingram, Livermore, McDaniels, Melber, Morganfield, New Haven, Owings- ville, Payneville, Powderly, Providence, Reed, Rhodelia, Richardsville, Richelieu, Rochester, Rockport, Sadie- ville, Sadler, Saint Mary, Sharon Grove, Sparta, Sulli van, Trappist, Union Star, Vanzant, Woodbury, and Worthville.

INT. I - III IN MICHIGAN

Alto, Decatur, Harbert, Lakeside, South Haven, and West Olive.

INT. I - III IN MISSOURI

Altenburg, Baring, Benton, Campbell, Commerce, Cooler, El Dorado Springs, Elsberry, Eolia, Florrissant, Frohna, High Ridge, Holden, Lead wood, Lock wood, Macomb, Manchester, Menfro, Messier, O'Fallon, Oran, Saint Charles, Saint Louis, Saint Marys, Saint Peters, Truesdail, Washington, Winfield, Wittenberg, Womack, and Zalma.

INT. I - III IN OHIO

Anna, Centerville, Christiansburg, Deshler, Eldorado, Farmersville, Luckey. Macon, McGuffey, Miamisburg, Middletown, Montezuma, New Knoxville, New Leba non, New Madison, Ohio City, Piketon, Port Jefferson, Rosewood, Ross, Tipp City, Verona, West Alexandria,


West Milton, Williston, Wilmington, Wren, and Wright Patterson Air Force Base.

INT. I - III IN TENNESSEE

Celina, Erin, Eva, Midway, Obion, Trimble, White Bluff, and White Pine.

INT. I - III IN VIRGINIA

Clinchport and Nora.INT. I - III IN WISCONSIN

Kansasville, Mount Hope, and Trevor.

Apr. 5. 13:41:11.2 (19:41). Epicenter 38.59° N., 90.91° W., eastern Missouri, at a depth of 1 km, SLM. Int. II at Augusta.

May 13. 00:52:18.8 (06:52). Epicenter 36.71° N., 89.39° W., New Madrid, Mo., region, at a depth of 1 km, SLM. Int. VI. Felt over a small area or Arkansas, Illinois, Kentucky, Missouri, and Tennessee (see fig. 8). At East Prairie, Mo., the city swimming pool was "badly damaged," and plaster cracked in several buildings. Many were awakened at one home by loud earth noises.

FIGURE 8.-Area affected by Missouri earthquake of May 13.

INT. V IN MISSOURI

Wolf Island and Wyatt.INT. V IN TENNESSEE

Obion.INT. IV IN ARKANSAS

McDougal.

INT. IV IN ILLINOIS

Cairo and Olmsted (press).INT. IV IN MISSOURI

Anniston.INT. IV IN KENTUCKY

Columbus, Kevil, Wickliffe, and Wingo.INT. IV IN TENNESSEE

Hornbeak.INT. I-III IN ILLINOIS

Jonesboro.INT. Mil IN MISSOURI

Charleston, Dutchtown, and Maiden.INT. Mil IN TENNESSEE

TroyJune 5. 02:06:11.3 (08:06). Epicenter 38.62° N.,

89.94° W., southern Illinois, at a depth of 11 km, SLM. Int. V. The press reported that pictures were knocked from walls at East Saint Louis, 111., and that some con cerned citizens called thej)olice department. Int. V ef fects also were observed at Belleville, Caseyville, Cottage Hills, Hartford, Highland, Marine, Mitchell, O'Fallon, Plainview, Renault, Roxana, Saint Jacob, Summerfield, and Troy.

INT. V IN MISSOURI

Arnold, Barnhart, Normandy, and Saint Louis.INT. IV IN ILLINOIS

Alhambra, Edwardsville, Evansville, Glen Carbon, Granite City, Maryville, Mascoutah, New Baden, Oak- dale, Saint Clair (press), Scott Air Force Base (press), Texico, and Trenton.

INT. IV IN MISSOURI

Flinthill, Saint Ann, Saint Charles (press), and West- alton.

INT. II IN ILLINOIS

Lebanon (press), New Minden, Piasa (press), and Shipman (press).

INT. II-HI IN MISSOURI

Bonne Terre, Dittmer, Hillsboro, Mapaville, and Map le wood.

Aug. 11. 08:29:45.0 (14:29). Epicenter 36.92° N., 91.17°W., southern Missouri area, at a depth of 4 km, USGS. Int. V. At Fremont, all in community felt the shock, which was accompanied by moderate earth noises. Windows, doors, and dishes rattled; hanging objects swung moderately northwest-southeast. Int. IV at Alton, Belleview, Ironton, and Winona; int. I-III at Centerville, Hiram, Jackson, McGee, New Madrid, Newburg, Success, Teresita, Thayer, Thomasville, Thornfield, and Womack.

Aug. 22. 16:33:59.6 (22:33). Epicenter 38.23° N.,


89.73° W., southern Illinois, at a depth of 12 km, USGS.Int. IV in Marissa area. The press reported houses shookat Sparta, 111., and that many farmers felt the shock east ofMarissa.

Sept. 28. 20:26:17.1 (Sept. 29, 02:26). Epicenter41.24°N., 83.36°W., Ohio, at a depth of 1 km, USGS.Int. II in Bowling Green, Findlay, Fostoria, and Tiffinareas.

"Nov. 25. 17:34:05.1(23:34). Epicenter40.3°N., 87.4°W., western Indiana, at a depth of 5 km, mag. 2.4(m bLg ), SLM. Int. II at Attica, Ind. NOTE: This epicenteris not listed in table 1 of this publication.

Dec. 12. 23:03:57.6 (Dec. 13. 05:03). Epicenter 34.67° N., 91.88° W., Arkansas, at a depth of 5 km, SLM. Int. V in Tucker-Coy area where the shock awakened many or all. The press reported that Little Rock residents were awakened and frightened. Int. IV at Coy, England, Hummoke, Humphrey, Keo, Little Rock, and Wabbaseka; int. Ill at Dumas, Ethel, Mabelvale, Sheri dan, Sweet Home (south of), and Scott.

Dec. 15. 20:30:21.4 (Dec. 16, 02:30). Macroseismic epicenter 35.33° N., 97.48° W., Oklahoma, at an as sumed depth of 10 km or less, TUL. Int. Ill in Moore.

Dec. 25. 07:21:35.0 (13:21). Epicenter 35.78° N., 90.01° W., Arkansas, at a depth of 10 km, USGS. Int. II at Armorel and Blytheville.

WESTERN MOUNTAIN REGION[Time given in this region is mountain standard. If an epicenter is

quoted, Greenwich mean time is given in parentheses. This region in cludes Arizona, Colorado (western), Idaho, Montana, Nevada (eastern), New Mexico, Texas (western), Utah, and Wyoming.]

Mar. 9. 18:50:21.3 (Mar. 10, 01:50). Epicenter 37.57° N., 113.68° W., southwestern Utah, at a depth of 2 km,USGS. Int. II at Enterprise.

Mar. 18. 05:14:26.0 (12:14). Epicenter 40.17°N., 116.70°W., Nevada, at a depth of 5 km, USGS. Awakened residents in Crescent Valley (int. IV).

Mar. 18. 05:54:57.0 (12:54). Epicenter 40.20°N., 116.58°W., Nevada, at a depth of 5 km, USGS. Int. II in Crescent Valley.

Mar. 31. 04:58:47.1 (11:58). Epicenter 40.70° N., 107.05° W., northern Colorado, at a depth of 5 km, USGS. Int. II at Clark and Steamboat Springs.

Apr. 16. No time given. Cedar City, Utah. Felt.Apr. 28. 22:44:35.7 (Apr. 29, 05:44). Epicenter

37.71°N., 113.03° W., Utah, at a depth of 5 km, USGS. Int. II in Summit area.

Apr. 29. 00:35:51.8 (07:35). Epicenter 37.81° N.,

112.98° W., Utah, at a depth of 5 km, USGS. Int. II in Summit area.

June 8. 17:50:42.0 (June 9, 00:50). Epicenter 44.80° N., 111.05° W., Hebgen Lake, Mont., region, at a depth of 5 km, USGS. Int. II in Gallatin County, Mont.-Yellowstone National Park, Wyo., area.

July 15. 23:38:45.8 (July 16, 06:38). Epicenter45.84° N., 111.37° W., Hebgen Lake, Mont., region, at a depth of 10 km, USGS. Int. V. Small objects shifted at Maud- low, Norris, and Springdale; int. IV at Belt, Jeffers, Manhattan, Shawmut, Trident, Virginia City, and Wil low Creek; I-III at Belgrade, Bozeman, Butte, Cameron, Canyon Creek, Fort Shaw, Gardiner, Garrison, Glen, Grey, Harrison, Helena (press), Jefferson City, Livings- ton, Pony, Ramsay, Silver Gate, Three Forks, Twin Bridges, White Sulphur Springs, and Winston.

Aug. 30. 09:41:59.1 (16:41). Epicenter 44.70° N., 110.80° W., Yellowstone National Park, Wyo., at a depth of 1 km, USGS. Int. V. Felt throughout Yellowstone National Park and in parts of southwestern Montana. The press reported ' 'the appearance of a few murky pools [of water]" and that six aftershocks occurred. At Norris, felt outside by tour group in geyser basin. "Trees shook; knees buckled." At West Yellowstone, some items were knocked off walls in stores and shops. At Old Faithful, windows at visitor center rattled loudly and ball point pens shifted on desk.' 'Telephone or powerlines behind the Old Faithful Inn bounced up and down at least 6 inches for about a minute after the quake." Int. IV at Madison Junction and Grants Village; I-III at Mammoth, Tower Junction, Lake, Canyon, and West Thumb Junction.

Aug. 30. (1) 10:04:45.9 (17:04), (2) 10:41:20.9 (17:41), (3) 12:33:20.5 (19:33), (4) 12:46:54.0(19:46), 23:07. Epicenter (1) 44.65°JSL, 111.09° W; (2) 44.58° N., 111.12°W; (3) 44.36°N., fll.05°W; (4) 44.64°N., 110.77°W, Hebgen Lake region, Mont., the first three at a depth of 5 km, USGS. Aftershocks of 09:41 event. Int. II. The aftershocks at 10:04 and 12:46 were feltjit Old Faithful. Those at 10:41, 12:33, and 23:07 were observed at Norris. "A minimum of 114 tremors were recorded on the seismograph at the Old Faithful Visitor Center Aug. 30th."

Sept. 1. 09:30-15:24. Montana. A swarm of small tremors occurred near the Norris Geyser Basin; 18 were strong enough to be felt. Those at 09:33, 09:36, 12:46, and 15:09 were felt strongest.

Sept. 19. 08:36:11.4 (15:36). Epicenter 44.11° N., 107.38° W., Wyoming, at a depth of 10 km, USGS. Int. V at Ten Sleep where small objects shifted and vehicles rocked. According to the press, cans and dishes on shelves

Earthquake Descriptions (Western Mountain} 65

rattled, and one observer "could see the concrete [probably sidewalk] moving."

Oct. 17. 23:25:28.1 (Oct. 18, 06:25). Epicenter44.73° N., 110.74° W., Yellowstone National Park, Wyo., at a depth of 5 km, USGS. Int. II at Madison Junction. During the period Oct. 17-23, more than 500 distinct tremors were recorded on the helicorder at the Old Faith ful Visitor Center. Approximately 15-20 of these were reported felt at several locations in the Park. On Oct. 18 rocks were cleared off the Firehole Canyon Drive; possi bly they were brought down by one or more of the trem ors. Additional tremors felt are as follows (from R.A. Hutchinson, National Park Service, Yellowstone Nation al Park):

Oct. 17. 23:59:11.5 (Oct. 18, 06:59). Epicenter44.74°N., 110.74°W., Yellowstone National Park,Wyo., at a depth of 5 km, USGS. Int. II at MadisonJunction.

Oct. 18. 05:00. Two minor shocks felt at CanyonVillage.10:00. Brief shaking and rumbling at Lewis Lake.11:30. South entrance of Park. Buildings rattled.12:05, 15:05, 19:45. Lasted 1 to 2 seconds at MadisonJunction.21:00. Three to five minor shocks at Canyon Village.

Oct. 19. 04:00. A couple of small tremors felt atCanyon Village.

Oct. 20. - Little tremors felt during day at CanyonVillage.Oct. 19. 19:14:55.0 (Oct. 20,02:14). Epicenter44.47°

N., lll.OPW., Hebgen Lake, Mont., region, at a depth of 5 km. USGS. Int. II at Canyon Village (press).

Oct. 22. 01:43:07.1 (08:43). Epicenter 44.74°N., IIO.STW., Yellowstone National Park, Wyo., at a depth of 5 km, USGS. Int. IV. Several were awakened at Old Faithful, Canyon Village, and Madison Junction.

Nov. 4. 02:02:28.0 (09:02). Epicenter 38.34° N., 112.33° W., Utah, at a depth of 17 km, USGS. Int. II in Marysvale area.

Nov. 27. 12:49. Int. Ill at Old Faithful, Yellowstone National Park, Wyo.

Dec. 1. 13:47, 13:50. Int. II at Madison Junction, Wyo.

Dec. 19. 20:01:10.4 (Dec. 20, 03:01). Epicenter 33.86° N., 111.88° W., eastern Arizona, mag. 2.5, USGS. Int. II at New River. NOTE: This epicenter is not listed in table 1 of this publication.

Dec. 23. 22:47:20.7 (Dec. 24, 05:47). Epicenter 33.86° N., 111.88° W., eastern Arizona, at a depth of 4 km, USGS. Int. II at New River.

Dec. 28. 06:57:41.1 (13:57). Epicenter 42.00° N., 111.97° W., Idaho-Utah area, at a depth of 8 km,USGS, mag. 2.8, SLC. The press reported many residents in Fairview-Lewiston, Utah, were jolted by a slight tremor. It was felt over much of Cache Valley, according to one press account. Int. IV at Richmond and Weston; int. II in areas 5 to 19 km south of Preston. NOTE: This epicenter is not listed in table 1 of this publication.

CALIFORNIA AND WESTERN NEVADA

[Time given in this region is Pacific standard. If an epicenter is quoted, Greenwich mean time is given in parentheses. All towns are located in California unless otherwise noted.]

Jan. 5. 19:21. Mag. 2.6, B. Felt in the Day area (about 19 km northwest of Nubieber).

Jan. 6. 05:55:23.2 (13:55). Epicenter 41.12° N., 121.49° W., northern California, at a depth of 5 km, B. Int. VI. Felt over about 3,200 km2 (1,235 mi2 ) of northern California. Minor damage occurred at Bieber and Nubieber.

INT. VI

Bieber. Felt by and awakened many in community; frightened few. Some plaster cracked, broke, and fell. Trees and bushes shook. Hanging objects swung vio lently. Damage slight.

Nubieber. Felt by and awakened all in community. Small objects shifted, overturned, and fell. "Ruptured main gas pipe leading to gas pumps at Chevron station."

INT. vAdin (2 shocks), Dana area (about 10 km northwest of

Glenburn), Day (aftershock 5 minutes later), Fall River Mills, Glenburn, Lookout (16 km north of), McArthur (plaster cracked), McCloud, and Pondosa.

INT. IV

Lookout (5 km west-southwest of).INT. II

Hat Creek.Jan. 7. 20:49. Northern California. Mag. 2.2, B. Int.

IV at Santa Rosa. Faint earth noises. Windows, dishes, and doors rattled. Motion rapid, 1-second duration.

Jan. 8. 21:51. Northern California. Mag. 2.7, B. Int. II at Ferndale.

Jan. 10. 03:22:24.9 (11:22). Epicenter 36.96° N., 121.61° W., central California, at a depth of 10 km, B. Int. V. The earthquake was felt over approximately 10,400 km2 (4,000 mi 2 ) of central California, but caused no damage. It generally awakened many in the area, and caused small objects to shift and fall in several instances.


Int. V at Aromas, Boulder Creek, Carmel, Carmel Val ley, Castroville, Chittenden Pass (36.9° N., 121.6° W.), Corralitos area (37.0° N., 121.8° W.), Cupertino, Free dom, Gilroy (1 km west of and 12 km northeast of), Hollister area (14 km and 21 km south of), Jamesburg area (Search Ranch), Marina, Monterey, Morgan Hill, Moss Landing, Mount Hamilton, Pacheco area (about 16 km north of Hollister), Pacific Grove, Salinas, San Juan Bautista, San Martin, Santa Cruz, Seaside, Sequel, and Watsonville; int. IV at Hollister (and 11 km south of), Los Gatos, Mount Hermon, Pebble Beach, and Santa Clara; int. Ill at Capitola (press), King City (press), La Honda, Redwood City (press), San Francisco, San Jose (press), San Mateo, Scotts Valley (press), South San Francisco, and Sunny vale.

Jan. 17. 01:30. The press reported a minor earthquake shook dozens of residents in the Lawndale-Hawthorne area. Reportedly felt from Gardena to Manhattan Beach and from Torrance to Hawthorne.

'Jan. 19. 05:13:37.2 (13:13). Epicenter 34.38° N., 117.05° W., southern California, at a depth of 0 km, P. Int. IV. Felt in Apple and Lucerne Valleys and at Victor- ville and Hesperia, according to press accounts. Residents in the area were awakened.

Jan. 23. 21:02:00.8 (Jan. 24,05:02). Epicenter 35.07° N., 119.03° W., central California, at a depth of 8 km, P. Int. V. Felt by all in community at Mettler; awakened all in home. "A few cracks." Dishes fell off shelves and furniture shifted at Pumpkin Center; frightened few in community. Int. IV at California City, Frazier Park, Lebec (Fort Tejon State Historical Park), Maricopa, Sandberg Ranch, Taft, and Tehachapi; int. II-III at Caliente, Di Giorgio, Lament, Lebec, Loraine, Mojave, Monolith, North Edwards, and Tejon Rancho (35°02' N., 118°45' W.).

Jan. 30. 22:05:28.8 (Jan. 31, 06:05). Epicenter 34.05° N., 117.03° W., southern California, at a depth of 8 km, P. Int. V. Felt over about 6,500 km2 (2,500 mi 2 ) of Riverside and San Bernardino Counties. No damage oc curred. Int. V at Big Bear Lake, Riverside, San Bernar dino (Del Rosa), and Sunnymead; int. IV at Calimesa, Corona, Crestline, East Highlands, Green Valley Lake, Hemet, Highland, Lakeview, Loma Linda, Moreno, Red- lands, Running Springs, and Skyforest; int. II-III at Anaheim (press), Cabazon, Norco, Nuevo, Sun City, and Yucaipa.

Jan. 31. 19:27:51.0 (Feb. 1, 03:27). Epicenter 36.78° N., 121.57° W., central California, at a depth of 4 km, B. Int. IV at Salinas Substation and at Harris Ranch (11 km south of Hollister).

Feb. 8. 14:05:44.7 (22:05). Epicenter 37.38° N., 121.76° W., central California, at a depth of 7 km, B. Int. II at Milpitas.

Feb. 11. 04:20:56.9 (12:20). Epicenter 34.10° N., 118.27° W., southern California, at a depth of 12 km, P. Felt in the Silver Lake area near downtown Los Angeles and in the San Fernando Valley. Int. IV at Glendale, Hollywood, and west Los Angeles. The press reported the earthquake was felt at Burbank, Escondido (3 tremors felt), Pasadena, and Sherman Oaks.

Feb. 13. 20:20:02.4 (Feb. 14,04:20). Epicenter 36.73° N., 121.40° W., central California, at a depth of 3 km, mag. 2.8, B. Int. IV at Harris Ranch, 11 km south of Hollister, where windows and doors rattled and building creaked. NOTE: This epicenter is not listed in table 1 of this publication.

Feb. 15. 06:44:29.3 (14:44). Epicenter 34.42° N., 118.38° W., southern California, at a depth of 8 km, P. Int. II in the Saugus area.

Mar. 1. 16:23. Int. IV at Alpine (a few kilometers east of San Diego).

Mar. 5. 17:45. A slight shock was felt in the Eagle Rock and Highland Park areas of Los Angeles, according to press accounts.

Mar. 8. 16:54:13.6 (Mar. 9,00:54), 16:54:31.6 (Mar. 9, 00:54, main shock). Epicenter (1) 34.38° N., 118.42° W, (2) 34.38° N., 118.43° W., southern California, both at a depth of 8 km, P. Int. V (main shock) at Altadena, Flintridge, Glendale (swimming pool water sloshed), Granada Hills (plaster cracked), Hollywood, La Canada (water disturbed in pond), La Crescenta, Newhall, Pacoima, Pasadena (minor crack in stucco siding), San Fernando (Kagel Canyon), Saugus, Sylmar (new block wall and plaster cracked), Van Nuys (few cracks), and west Lost Angeles; int. IV at Arcadia, Canoga Park, Comp- ton, Fillmore, Inglewood, Manhattan Beach, Monrovia, Moorpark, Piru, Redondo Beach, Sierra Madre, Temple City, Simi Valley, Torrance, and Woodland Hills; int. Ill at Maywood; int. II at Alhambra, El Segundo, Gardena, Palos Verdes Peninsula, San Pedro, and Thousand Oaks.

Mar. 11. 23:35:46.0 (Mar. 12, 07:35). Epicenter 34.10° N., 118.20° W., southern California, at a depth of 8 km, P. Int. IV at Hollywood where the shock was felt by many. The press reported the shock was felt at Burbank, Central City, east Los Angeles, Glendale, Los Feliz, Silverlake, south Los Angeles, and Van Nuys.

Mar. 12. 04:45:28.1 (12:45). Epicenter 37.29° N., 122.32° W., central California, at a depth of 11 km, B. Int. V. The earthquake caused no damage. One Big Basin resident noted: "First noticed on Mar. 13, 1974, on China

Earthquake Descriptions (California, Western Nevada) 67

Grade Rd. [Big Basin State Park], that a faultline that runs across the road developed an open crack across the road, and the down hill (south) portion of the road dropped 3-5 inches." The observer did not feel the earthquake. Int. V effects were observed at La Honda, Pescadero, and San Gregorio. The press reported the earthquake was felt at Atherton, Palo Alto, and Redwood City.

Mar. 16. 07:57:41.8 (15:57). Epicenter 40.34° N., 124.72° W., near coast of northern California, at a depth of 33 km, B. Int. IV at Fortuna, Humboldt Hill (near Eureka), and Rio Dell; int. Ill at Eureka (Humboldt Bay Powerplant) and Scotia.

Mar. 21. 13:16:05.3 (21:16). Epicenter 36.60° N., 122.66° W., northern California, at a depth of 2 km, B. Int. VI. A Cloverdale resident reported: "I understand that the floor in workshop [Union Oil] cracked enough to bring dirt into the shop; boulders and rocks fell; several cracks in the earth. This was reported to me by those working there." At Pacific Gas and Electric (PG&E) Geysers Powerplant, rocks slid down hills; several light fixtures broke; clock fell off wall. "Everything rocked for about 2 seconds." Int. IV at Cobb and near Loch Lomond (0.4 km north of); int. II at Calistoga. Also felt at Healds- burg. Questionable felt report from San Francisco (390 Main Street, 7th floor).

Mar. 21. 14:50:05.7 (22:50). Epicenter 34.15° N., 117.47° W., southern California, at a depth of 8 km, P. Int. IV at Etiwanda; int. II at Fontana.

Mar. 24. 08:57:09.0 (16:57). Epicenter 37.55° N., 121.85° W., central California (on the Calaveras fault), at a depth of 8 km, B. Int. V at Sunol, where furniture shifted; loud earth noises; int. IV at Fremont; int. II at Berkeley. Also felt at Mission San Jose and Irvington.

Mar. 31. 15:06:18.1 (23:06). Epicenter 36.94° N., 121.60° W., central California, at a depth of 8 km, B. Int. V. Several small objects shifted and fell at Watsonville (Chittenden Pass area). Frightened all in home. Int. IV at Gilroy; int. Ill at Moss Landing.

Apr. 8. 11:13. Int. V at Cloverdale where everyone felt the earthquake. Small objects overturned and fell; int. ID at PG&E Geysers Powerplant.

Apr. 9. 14:14. Int. IV at Alpine (a few kilometers east of San Diego).

Apr. 17. 11:30:30.4 (19:30). Epicenter 36.94° N., 121.59°W., central California, at a depth of 7 km, B. Int. IV at Moss Landing. Also felt at a radio station in Gilroy.

Apr. 18. 02:11, 02:15. Two slight tremors were felt at Gilroy and Cupertino, according to press accounts.

Apr. 19. 16:57, 17:00, 17:05, 17:12. Int. IV at Alpine (a few kilometers east of San Diego).

Apr. 20. 11:55. Int. II at Alpine (a few kilometers east of San Diego).

Apr. 26. 04:26:17.2 (12:26). Epicenter 40.80° N., 123.88° W., northern Califumia, at a depth of 21 km, mag. 3.0, B. Int. IV at Eureka and Fortuna. NOTE: This epicenter is not listed in table 1 of this publication.

Apr. 29. 06:58. Int. II at Redwood Valley.May 27. 01:19:19.7 (09:19). Epicenter 39.85° N.,

120.91° W., northern California, at a depth of 2 km, B. Int. V at Berry Creek, Blairsden, Calpine, Clio, Dobbins, Feather Falls, Johnsville, La Porte, Nevada City, Quincy, Sierra City, and Strawberry Valley; int. IV at Alleghany, Beckwourth, Downieville, Grass Valley, Janesville, Paradise, Portola, Sattley, Sierraville, Sloat, Spring Gar den, Storrie, Vinton, and Washington.

May 29. 11:23:32.8 (19:23). Epicenter 36.82° N., 115.88° W., California-Nevada region, at a depth of 11 km, USGS. Int. II in Yucca Flat, Nev., area.

June 5. 15:15. Int. IV at Caribou. Observer reported: "Dept. of Water Resources reports an earthquake of 2.75 mag. at 1615 [PDT] on 6/5/74. Location approximately 30 miles (48 km) northeast of Oroville Dam. Location of center 39°57" N., 121°15" W. Earthquake was felt and described as slight in camp at Caribou but not at the Powerhouse 1 mile (1.6 km) away. Was not felt at Rock Creek Powerhouse down river or at Prattville."

June 6. 04:13:49.8 (12:13). Epicenter 38.45° N., 122.64° W., northern California, at a depth of 2 km, B. Int. IV at Santa Rosa; int. II at Angwin and Rohnert Park (press).

June 9. 14:27:33.7 (22:27). Epicenter 35.53° N., 117.45° W., central California, at a depth of 8 km, P. Int. II at China Lake and Ridgecrest (press).

June 9. 22:44:09.9 (June 10, 06:44). Epicenter 35.53° N., 117.45° W., central California, at a depth of 8 km, P. Int. V. Felt over a small area, including parts of Kern and San Bernardino Counties. An observer at Argus reported a crack in driveway, but no other damage was noted. Int. V effects also were observed at China Lake (weak foreshock at 14:25), Randsburg, Red Mountain, and Trona; int. IV at Johannesburg; int. Ill at Inyokern (3.5 km north of).

June 9. 23:35:00.5 (June 10,07:35). Epicenter 40.45° N., 125.08° W., off coast of northern California, at a depth of 22km, USGS. Int. IV at Pepperwood, Rio Dell, and Scotia.

June 10. 07:02. Mag. about 2.5. B. Int. II at Santa Rosa.

June 12. 10:56, 1 1:21:51.2 (19:21). Epicenter 36.72° N., 121.43° W., central California, at a depth of 5 km, B. Int. V at Almaden Vineyards (about 14 km south of


Hollister) and Tres Pinos; int. IV at Harris Ranch (11 km south of Hollister; both tremors felt), Hollister (and 19 km south of), and San Juan Bautista; int. Ill about 18 km south of Hollister (12830 Cienega Rd.)

June 13. 03:10. Int. II at Ferndale.June 13. 18:49:37.6 (June 14, 02:49). Epicenter

36.86°N., 121.41°W., central California, at a depth of 9 km, mag. 3.0, B. Int. IV at Harris Ranch, 11 km south of Hollister. NOTE: This epicenter is not included in table 1 of this publication.

June 14. 06:03. Int. IV at Hollister.June 14. 16:24. Mag. 2.3, B. Epicenter in or very near

Oakland. Widely felt in Oakland.June 15. 09:49:25.4 (17:49), 11:00, 11:29. Epicenter

36.72° N., 121.41° W., central California, at adepth of 7 km, B. Int. III. Observer reported three earthquakes between 09:00 and 11:30. Three shocks were felt at Harris Ranch (11 km south of Hollister).

June 19. 10:20. Int. IV at Alpine (a few kilometers east of San Diego).

'June 23. 16:39:52.0 (June 24, 00:39). Epicenter 40.95° N., 124.06° W., near coast of northern California, at a depth of 29 km, B. Felt along a 70-km stretch of Humboldt County coastline, from Trinidad on the north to Scotia on the south. Int. IVatBayside, Eureka (Humboldt BayPowerplant), and Rio Dell; int. IIIatFortuna; int. Hat Ferndale. Also felt at Trinidad (press), and at Pepperwood and Scotia (reported by Rio Del resident).

July 2. 21:00:58.6 (July 3, 05:00). Epicenter 40.42° N., 125.14° W., off coast of northern California, at a depth of 12 km, B. Int. V. Small objects shifted at Bridgeville and Eureka (Humboldt Hill). The press re ported that Ferndale and the Eel River Valley area were shaken. Int. IV at Ferndale, Fortuna, and Petrolia; int. Ill at Miranda (aftershock felt on July 3, 00:50 PST, int. Ill) and Rio Dell.

July 9. 23:46:28.2 (July 10, 07:46). Epicenter 34.17° N., 116.72° W., southern California, at a depth of 8 km, P. Int. II in San Bernardino area.

July 13. 03:09:57.5 (11:09). Epicenter 40.37° N., 125.18° W., off coast of northern California, at a depth of 1 km, USGS. Int. II at Ferndale.

July 18. 06:33. Int. II at Ferndale.Aug. 3. 19:43:54.0 (Aug. 4, 03:43). Epicenter 38.00°

N., 121.86° W., northern California, at adepth of 24 km, B. Int. II in the Pittsburg area (press).

Aug. 4. 01:08:21.9, P. Residents of the Lake Arrow head area were awakened, according to press reports. This was the strongest of a series of minor tremors that shook San Bernardino County and desert towns (press).

Aug. 4. 07:03:45.4 (15:03). Epicenter 36.61° N.,

121.26° W., central California, at a depth of 6 km, B. Int. II at Harris Ranch, 11 km south of Hollister.

Aug. 9. 04:19:59.5 (12:19), Epicenter 40.22°N., 124.15°W., near coast of northern California, at a depth of 7 km, B. Int. V at Petrolia where all were awakened; int. IV at Ferndale and Rio Dell.

Aug. 10. 09:47:34.5 (17:47). Epicenter 40.7° N., 124.4° W., northern California, at a depth of 7 km, mag. 3.3, P. Int. Ill at Ferndale. NOTE. This epicenter is not listed in table 1.

Aug. 14. 06:45:55.4 (14:45). Epicenter 34.43° N., 118.37°W., southern California, at a depth of 7 km, P. Felt over 10,000 km2 (3,860 mi2 ) of southern California. The press reported that windows and dishes rattled, build ings swayed, and small objects shifted throughout the Los Angeles area. Int. V at Acton, Burbank, El Monte, Glen- dale, La Canada, Lake Hughes, Los Angeles, Newhall, Monrovia, Pacoima, Tujunga, and Verdugo City; int. IV at Agoura, Alhambra, Arcadia, Arleta, Canoga Park, Chatsworth, Etiwanda, Fullerton, La Mirada, Monterey Park, Montrose, Newbury Park, North Hollywood, Northridge, Panorama City, Pasadena, Placentia, Rosemead, South Pasadena, Sunland, Temple City, To- panga, Valyermo, and Ventura; int. I-III at Altadena, Beverly Hills, Calabasas, Fountain Valley, Lancaster, Mount Wilson, Reseda, San Fernando, Sierra Madre, Simi Valley, Sun Valley, West Covina, Westminster, Woodland Hills, and Wrightwood.

Aug. 29. 14:52. Mag. 3.0, B. Int. II at Eureka (Hum boldt Hill).

Aug. 29. 23:55:29.8 (Aug. 30, 07:55). Epicenter 36.83°N., 121.37° W., at a depth of 6 km, mag. 3.4, B. Int. II at Hollister (about 11 km south of, at Harris Ranch). NOTE: This epicenter is not listed in table 1.

Sept. 6. 05:23:31.4 (13:23). Epicenter 34.29° N., 118.52° W., southern California, at a depth of 8 km, P. Int. II in San Fernando'area.

Sept. 6. 06:40:42.9 (14:40). Epicenter 34.20° N., 118.58° W., southern California, at a depth of 8 km, P. Int. II at Saugus.

Sept. 11. 17:27:32.5 (Sept. 12, 01:27), 23:12. Epi center 38.82° N., 122.65° W., northern California, at a depth of 8 km, B. Both shocks were int. II at PG&E Geysers Powerplant (Cloverdale area).

Sept. 20. 20:31:28.5 (Sept. 21, 04:31). Epicenter 40.70°N., 123.87° W., northern California, at adepth of 25 km, mag. 3.5 B. NOTE: This epicenter is not listed in table 1.

Sept. 21. 02:37:42.7 (10:37). Epicenter 33.77° N., 117.25° W., southern California, at a depth of 8 km, P. Int. VI. The press reported damage at Sunnymead (three

Earthquake Descriptions (California, Western Nevada) 69

walls cracked at ranch) and San Bernardino (damage not described). Int. V effects occurred at Hemet (sleepers knocked out of beds; press) and Beaumont; int. IV at Calimesa, Redlands, and Yucaipa. Press reports indicated the shock also was felt at Banning, Palm Springs, Perris, Riverside, and Sun City.

Sept. 24. 12:07:24.8 (20:07). Epicenter 35.19° N., 120.85° W., central California, at a depth of 8 km, B. Int. II at Diablo Canyon, Morro Bay, and San Luis Obispo.

Oct. 7. 16:56:05.1 (Oct. 8, 00:56). Epicenter 34.05° N., 118.97° W., southern California, at a depth of 8 km, P. Int. IV in Ventura-Camarillo-Malibu area. The press reported the jolt triggered a small earthslide south of Oxnard on the Pacific Coast Highway, but another press account stated that rain might have caused the slide.

Oct. 12. 01:54:57.4 (09:54). Epicenter 34.13° N., 118.98°W., southern California, at a depth of 8 km, P. Int. II at Solromar.

Oct. 12. 04:21:26.1 (12:21). Epicenter 33.72° N., 116.88°W., southern California, at a depth of 8 km, P. Int. II at Hemet.

Oct. 14. 09:33:00.0 (17:33). Epicenter 34.25° N., 117.15° W., southern California, at a depth of 8 km, P. Int. II at Lake Arrowhead.

Oct. 22. 04:13:39.1 (12:13). Epicenter 34.00° N., 118.37° W., southern California, at a depth of 8 km, P. Int. V at Newhall and Los Angeles (2555 South Westgate Ave.) where many were awakened; int. IV at Seal Beach and Torrance; int. I-III at Beverly Hills, Culver City, Hawthorne, Ingle wood, Lawndale, Pico Rivera, Santa Monica, Topanga, and Vernon. The press reported the shock was noted in Malibu, Manhattan Beach, Marina del Rey, and Venice (int. I-III).

Oct. 25. 05:29:52.2 (13:29). Epicenter 33.07° N., 115.62° W., southern California, at a depth of 8 km, P. Int. II in Imperial Valley, including Brawley and West morland.

Oct. 28. 01:12:07.1 (09:12). Epicenter 35.73° N., 118.38° W., central California, at a depth of 8 km, P. Int. II in Kernville area.

Nov. 5. 16:38:28.0 (Nov. 6, 00:38). Epicenter 34.20° N., 118.15° W., southern California, at a depth of 4 km,P. Int. IV at Altadena, Pasadena, and Sierra Madre (press).

Nov. 9. 02:10:35.3 (10:10). Epicenter 33.58°N., 116.67° W., southern California, at a depth of 5 km, P. Int. II in Palm Springs area.

Nov. 9. 02:12:57.4 (10:12). Epicenter 33.58° N., 116.67° W., southern California, at a depth of 6 km, P. Int. II in Palm Springs area.

Nov. 10. 20:14:20.0(Nov. 1 1,04:14). Epicenter 38.75° N., 122.83° W., central California, at a depth of 2km, B.

Int. V. Felt by many or all workers at the PG&E Geysers Powerplant (Cloverdale area). "Like an explosion." Vehicles rocked. Rockslides were reported, but it is doubtful that such a small tremor would generate slides.

Nov. 12. 01:14:58.9 (09:14). Epicenter 34°42' N., 118°42' W., southern California, at a depth of 4 km, P. Int. II in San Fernando area.

Nov. 17. 17:50:34.1 (Nov. 18, 01:50). Epicenter 37.51°N., 121.84° W., central California, at a depth of 8 km, mag. 2.9, B. Int. II at Milpitas, a few kilometers north of San Jose. NOTE: This epicenter is not listed in table 1.

Nov. 17. 18:04:53.5 (Nov. 18, 02:04). Epicenter 37.50° N., 118.75° W., California-Nevada border area, at a depth of 2 km, mag. 3.8, P. Int. II at Crowley Lake Dam in Bishop area. NOTE: This epicenter is not listed in table 1 of this publication.

Nov. 17. 22:43:51.6 (Nov. 18, 06:43). Epicenter 35.68°N., 117.58° W., central California, at a depth of 8 km, P. Int. II at Ridgecrest.

Nov. 21. 04:55:16.3 (12:55). Epicenter 37.50° N., 118.36° W., California-Nevada border region in Chalfant Valley, Calif., at a depth of 10 km, USGS. Int. II. A series of earthquakes occurred on this date. A number of these reportedly were felt from Mammoth Lakes to Bridgeport.

Nov. 24. 19:50:41.4 (Nov. 25, 03:50). Epicenter 33.53° N., 116.55° W., southern California, at a depth of 10 km, P. Int. IV at Alpine; int. II at Banning and Hemet.

Nov. 27. 10:27. Int. Ill at Alpine.Nov. 28. 10:16:05.6 (18:16). Epicenter 40.32° N.,

125.13° W., off coast of northern California, at a depth of 10 km, B. Int. IV at Rio Dell; int. Ill at Ferndale and Scotia.

Nov. 28. 10:30. Int. Ill at Dunlap, about 35 miles east of Fresno.

Nov. 28. 15:01:24.8 (23:01). Epicenter 36.91° N., 121.50° W., central California, at a depth of 9 km, B. Felt over 18,000 km2 (7,000 mi2 ) of central California (see fig. 9). Int. VI. At Hollister, widespread minor damage occurred. Much stock was destroyed in supermarkets, and several windows broke. The following was excerpted from press reports:

Firemen spent half an hour reconnecting gas pipes at one residence. A water pipe burst on Shore Road. Bits of plaster fell in one home on that street. Minor cracks appeared in the old San Benito County Hall of Records and in the wall and ceiling of the Hollister Hotel Bricks were knocked from chimney top at one residence; five windows broke at another. Three 7- by 10-foot plate glass windows shattered at a glass company; two cracked. Water sloshed out of swimming pool.


121

5 CALIFORNIA5 4

5______

radley

FIGVRE 9,-Area affected by central California earthquake of November 28.

INT. V

Ben Lomond, Big Sur, Carmel Valley, Gilroy, King City, La Selva Beach, Loma Mar, Morgan Hill, Pesca- dero, Salinas, San Benito City (windows cracked). San Francisco, San Jose, San Juan Bautista (press reported plate glass window broke at Mission Sundries on Third St.), San Martin, and South San Francisco (press).

INT. IV

Aptos, Aromas, Boulder Creek, Brookdale, Campbell (press), Capitola, Carmel, Castroville, Chualar, Cuper- tino, Daly City, Felton, Freedom, Fremont, Holy City, Los Banos, Marina, Milpitas, Monterey, Mount Hermon, Pacific Grove, Palo Alto, Redwood City, San Lorenzo, Santa Clara, Santa Cruz, Seaside, Tiburon, Watsonville, and Westley.

INT. Mil

Bradley, Castro Valley, Crows Landing, Dos Palos,

Fresno, Friant, Greerifield, Half Moon Bay (press), Hathaway Pines, La Honda, Los Altos, Newman, Patter- son, Petaluma, Pleasanton, San Ardo, San Bruno, Sole- dad, Stinson Beach, Vacaville, and Willow Glen.

Nov. 28. 15:07:59.1 (23:07). Epicenter 34.23° N., 116.80° W., southern California, at a depth of 12 km, P. Int. II in Big Bear area.

Dec. 1. 02:20:54.9 (10:20). Epicenter 37.26° N., 121.64° W., central California, at a depth of 6km, B. Int. II at Gilroy, Hollister, Morgan Hill, and San Jose.

Dec. 6. 04:13:08.0 (12:13). Epicenter 32.72° N., 115.40° W., California-Mexico border region, at a depth of 15 km, P. Int. V. Burglar alarms were triggered at El Centre and Brawley; several cans fell off shelves in a Brawley supermarket. Plaster cracks were noted in Calexico's El Rey Hotel. Int. V effects also occurred at Heber and Imperial; int. IV at Glendale, La Canada, Seeley, and Winterhaven; int. II at Yuma, Ariz.

Dec. 6. 05:45:13.6 (13:45). Epicenter 34.10° N., 118.22° W., southern California, at a depth of 15 km, P. Int. V. Slight damage occurred on Los Feliz Boulevard in Hollywood windows and plaster cracked; small objects shifted. Int. V effects also occurred at Glendale; int. IV at La Canada and North Hollywood; int. Ill at Altadena.

Dec. 6. 22:18:02.5 (Dec. 7, 06:18). Epicenter 34.18° N., 117.63° W., southern California, at a depth of 6 km, P. Int. Ill at Etiwanda.

Dec. 19. 04:36:16.9 (12:36), 04:39:50.5 (12:39). Epi center (1) 34.08° N., 118.08° W., (2) 34.07° N., 118.08° W., southern California, at a depth of 8 km, P. Int. IV at Glendale, Hollywood, and San Gabriel. The press re ported the earthquakes were felt (int. Ill) at Burbank, Covina, Eagle Rock, Huntington Park, La Canada, La Crescenta, Lakewood, Long Beach, Metropolitan Los Angeles, Santa Monica, Sierra Madre, Silver Lake, South Gate, South Pasadena, and Temple City.

Dec. 29. 01:51:44.9 (09:51). Epicenter 37.96° R, 122.36° W., northern California, at a depth of 4 km, B. Int. V. At Richmond, many were awakened; int. IV at Pinole. The press reported the tremor also was felt at Berkeley, El Cerrito, and Kensington (I-III).

Dec. 30. 10:28. Mag. 2.2, B. The press reported a clock ' 'rattled off the walls'' of a Monterey radio station.

Dec. 31. 12:22:01.2 (20:22). Epicenter 36.93° N., 121.48° W., central California, at a depth of 9 km, B. Int. IV at Hollister, Salinas, and Seaside; int. IE at Cas troville, Friant, Moss Landing Powerplant, and San Mar tin. Also felt in Oakland, San Francisco, and San Jose area (int. I-III)

Earthquake Descriptions (Washington, Oregon) 71

WASHINGTON AND OREGON

[All times are Pacific standard. If an epicenter is quoted, Greenwich mean time is given in parentheses.]

Apr. 19. 19:00:09.3 (Apr. 20, 03:00). Epicenter 46.76° N., 121.52° W., Washington, at a depth of 5 km, USGS. Int. V at Packwood, where several felt the tremor and small objects shifted, overturned, and fell. Roaring earth noises. Int. IV at Longmire; int. I-III at Carbonado, Carnation, Eatonville, Elbe, Freeland, Indianola, Issa- quah, Kapowsin, Kittitas, Mattawa, Randle, Ronald, Roslyn, Seabeck, Selleck, Union, and Winlock.

May 16. 05:04:36.1 (13:04). Epicenter 48.14° N., 122.92° W., Washington, at a depth of 54 km, USGS. Felt over about 9,400 km2 (3,628 mi2 ) of northwestern Washington. Int. V.,No damage occurred, but a wood pile and a bookcase were knocked over at Nordland. Int. V effects also were observed at Coupeville and La Conner; int. IV at Bellingham, Brinnon, Darrington, Eastsound, Gardiner, Granite Falls, Greenbank, Index, Joyce, Lyn- den, Oak Harbor (northeast of, in Mariner's Cove area), Olga, Port Gamble, Port Ludlow, Preston, and Stanwood; int. I-III at Anacortes, Arlington, Clinton, Duvall, Free- land, Friday Harbor, Langley, Lopez, Quilcene, and Sil- vana.

May 22. 03:58:17.6 (11:58). Epicenter 48.63° N., 123.00° W., Vancouver Island region, S. Int. HatOrcas.

May 24. 22:59:20.7 (May 25,06:59). Epicenter47.90° N., 121.80°W., Snohomish County, Wash., S. Int. II at Monroe, Granite Falls, Machias, Marysville, and Lake Roesiger (press). Loud rumbling sound. Lasted 4-5 seconds.

July 14. 03:14:38.0 (11:14). Epicenter 47.60° N., 120.70° W., Washington, S. Int. IV at Plain.

July 28. 19:28:28.0 (July 29, 03:28). Epicenter45.90° N:, 122.60°W., Vancouver, Wash., area, S. Int. IV. Rattled windows and startled residents in the Vancouver area (press).

Aug. 15. 15:33:03.8 (23:33). Epicenter 47.30° N., 122.40° W., Washington, S. Int. II at Tacoma.

Nov. 1. 12:22:59.1 (20:22). Epicenter 48.60° N., 123.20° W., Washington, Vancouver Island region, at a depth of 53 km, S. Int. II on San Juan and Orcas Islands.

Nov. 30. 22:23:56.4 (Dec. 1, 06:23). Epicenter47.60° N., 122.32°W., Washington, at a depth ot 13 km, S. Int. II in Seattle area. Two tremors felt (press).

Dec. 12. 19:28:54.2 (Dec. 13, 03:28). Epicenter 45.27° N., 121.60° W., Washington-Oregon border reg

ion, at a depth of 22 km, USGS. Int. IV at Government Camp and Hood Meadows, Oreg.; int. HI at Camas and Parkdale, Wash.; int. II at Rhododendron, Oreg.

Dec. 15. 09:59:05.7 (17:59). Epicenter 48.50° N., 122.08° W., Washington, at a depth of 1 km, S. Int. V. Felt in Concrete-Sedro Woolley area. Int. V at Hamilton where all in community felt the tremor. Small objects shifted, overturned, and fell; faint earth noises. At Lyman, felt by and frightened many in community. "Loud blast.'' Two shocks felt, first the stronger. ' 'Heard of cracked chimneys in nearby vicinity." Int. Ill at Clear- lake.

Dec. 15. 10:06:59.0 (18:06). Epicenter 48.50° N., 122.10° W., Washington, S. Int. Ill in the Hamilton area.

ALASKA[Time given in this state is Alaska standard (150° Meridian). It" an

epicenter is quoted, Greenwich mean time is given in parentheses. Authority for epicenters, arrival times, and/or magnitudes is given after each parameter.]

Jan. 7. 07:47:03.0 (17:47). Epicenter 64.88° N., 147.56° W., central Alaska, at a depth of 10 km, USGS. Int. II at Fairbanks.

Jan. 8. 07:17:47.6, ADK. Int II at Adak.Jan. 24. 08:43:26.8 (18:43). Epicenter 61.59° N.,

147.63° W., southern Alaska, at a depth of 40 km. USGS. Felt generally through south-central Alaska. Int. V at Sheep Mountain Lodge; int. IV at Anchorage, Glennal- len, and Palmer; int. Ill at Valdez.

Jan. 24. 15:00:21.3 (Jan. 25, 01:00). Epicenter 61.53° N., 147.60° W., southern Alaska, at a depth of 28 km, USGS. Int. II at Sutton (61.4° N., 148.5° W.).

Jan. 31. 05:09:27.7 (15:09). Epicenter 61.93°N., 148.67°W., southern Alaska, at a depth of 66 km, USGS. Int. II at Palmer.

Jan. 31. 23:02:17.7 (Feb. 1, 09:02). Epicenter 62.14° N., 147.83° W., central Alaska, at a depth of 63 km, USGS. Int. II in Palmer area.

Feb. 2. 04:36:02.1 (14:36). Epicenter 61.46° N., 147.47° W., southern Alaska, at a depth of 69 km, USGS. Int. II. Felt strongly in south-central Alaska (press). Re ported at Anchorage, Palmer, and Wasilla.

Feb. 2. 05:55:28.3 (15:55). Epicenter 61.60° N., 147.60° W., southern Alaska, at a depth of 48 km, USGS. Int. II. Felt in southern Alaska. Felt strongly in Anchor age, Palmer, and other communities (press).

Feb. 4. 16:25:22.0 (Feb. 5, 02:25). Epicenter 62.70° N., 148.85° W., central Alaska, at a depth of 75 km, USGS. Int. V. Reported felt at the following stations on


the Alaska Railroad: Gold Creek, int. V (62.5°N., 149.4° W.); Colorado, int. IV (63.1° N., 149.3° W.); Houston, int. IV (61.4° N., 141.5° W.); and Montana, int. IV (62.1°N., 150.0° W.). Also felt at Anchorage, Fairbanks, and Palmer.

Feb. 5. 18:04:07.2 (Feb. 6, 04:04). Epicenter 53.80° N., 164.67° W., Unimak Island region, at a depth of 2 km, USGS. Int. V at Cold Bay where the shock was felt by all; few were awakened and frightened. Small objects displaced. Trees and bushes shook. Int. Ill in the Cape Sarichef area; int. II on Unalaska Island.

Feb. 16. 07:52:52.0 (17:52). Epicenter 51.26° N., 179.29° W., Andreanof Islands, at a depth of 33 km, USGS. Int. II on Adak Island.

Feb. 16. 14:54:42.3, ADK. Int. II on Adak Island.Mar. 9. 04:18:52:3 (14:18). Epicenter 61.40° N.,

149.62° W., southern Alaska, at a depth of 42 km, USGS. Int. II at Wasilla.

Mar. 9. 14:12:40.4 (Mar. 10,00:12). Epicenter 50.53° N., 175.11° W., Andreanof Islands, at a depth of 28 km USGS. Int. II on Adak Island

Mar. 10. 00:00:14.1 (10:00). Epicenter 63.16° N., 150.50° W., central Alaska, at a depth of 117 km, USGS. Int. II in Gold Creek area.

Mar. 24. 23:29:47.6, ADK. Int. II on Adak Island.Mar. 26. 06:56:34.0 (16:56). Epicenter 64.89° N.,

150.99° W., central Alaska, at a depth of 33 km, USGS. Int. II at Manley Hot Springs.

Mar. 29. 11:50:35.3 (21:50). Epicenter 57.59°N., 153.92°W., Kodiak Island region, at a depth of 44 km, USGS. Int. IV at Kodiak and II at Anchorage. Felt strongly on Woody Island (press).

Mar. 31. 05:34:24.7 (15:34). Epicenter 51.71° N., 177.29° W., Andreanof Islands, at a depth of 61 km, USGS. Int. IV on Adak Island.

Apr. 5. 15:53:47.3 (Apr. 6, 01:53). Epicenter 55.10° N., 160.44° W., Alaska Peninsula, at a depth of 27 km, USGS. Int. V. Minor damage at Sand Point. Felt by all at Port Moller and Cold Bay where small objects shifted.

Apr. 5. 16:27:21.8 (Apr. 6, 02:27). Epicenter 55.34° N., 160.60° W., Alaska Peninsula, at a depth of 33 km, USGS. Int. II at Sand Point.

Apr. 5. 17:56:01.8 (Apr. 6, 03:56). Epicenter 55.12° N., 160.44° W., Alaska Peninsula, at a depth of 40 km, USGS. Int. V. Small objects shifted and fell at Cold Bay. Felt at Sand Point and Port Moller.

Apr. 6. 03:27:36.4, PMR. Int. II at Sand Point.Apr. 6. 05:13:32.2, PMR. Int. II Cold Bay, Port

Moller, and Sand Point.Apr. 13. 17:30. Int. IV at Port Moller. Building

creaked; light tremor.Apr. 15. 06:27:35.5 (16:27). Epicenter 59.19° N.,

136.43° W., southeastern Alaska, at a depth of 7 km, USGS. Int. IV at Haines.

Apr. 18. 11:54:26.4 (21:54). Epicenter 59.16° N., 139.97° W., southeastern Alaska, at a depth of 28 km, USGS. Int. II at Yakutat.

Apr. 21. 16:29:40.1 (Apr. 22, 02:29). Epicenter 51.99° N., 176.06° W., Andreanof Islands, at a depth of 70 km, USGS. Int. IV on Adak Island

Apr. 25. 00:16:15.3, ADK. Int. Ill on Adak Island.Apr. 25. 15:07:08.7 (Apr. 26, 01:07). Epicenter

51.76° N., 176.75° W., Andreanof Islands, at a depth of 64 km, USGS. Int. II on Adak Island.

Apr. 28. 06:27:39.8 (16:27). Epicenter 61.67° N., 149.02° W., southern Alaska, at a depth of 32 km, USGS. Int. II at Palmer and Wasilla.

May 7. 18:27:13.1 (May 8, 04:27). Epicenter 63.67° N., 150.73° W., central Alaska, at a depth of 11 km, USGS. Int. IV in Fairbanks area.

May 10. 18:17:34.7 (May 11,04:17). Epicenter 61.66° N., 150.59° W., southern Alaska, at a depth of 67 km, USGS. Int. II. Felt from Gold Creek to Anchorage, and at points along the Alaska Railroad.

May 13. 06:50. Int. Ill at College.May 21. 13:31:41.2 (23:31). Epicenter 63.31° N.,

151.25° W., central Alaska, at a depth of 12 km, USGS. Int. II at Palmer.

May 26. 05:52:50.6 (15:52). Epicenter 62.93° N., 148.23° W., central Alaska, at a depth of 88 km, USGS. Int. II at Willow.

May 26. 08:13:58.6 (18:13). Epicenter 61.57° N., 150.24° W., southern Alaska, at a depth of 3 km, USGS. Int. II at Willow.

May 27. 04:01:43.5 (14:01). Epicenter 60.33° N., 146.02°W., southern Alaska, at a depth of 21 km, USGS. Int. Ill at Boswell Bay and Cordova; int. II in Anchorage area.

May 27.22:21:59.4 (May 28,08:21). Epicenter 60.61° N., 149.78° W., Kenai Peninsula, at a depth of 27 km, USGS. Int. II at Anchorage and Seward.

June 3. 22:13:12.6, ADK. Int. II on Adak Island.June 6. 00:53:08.2 (10:53). Epicenter 52.02° N.,

175.40°W., Andreanof Islands, at a depth of 62 km, USGS. Int. II on Adak Island.

June 11. 10:20:44.9 (20:20). Epicenter 51.92° N., 173.53° W., Andreanof Islands, at a depth of 58 km, USGS. Int. II on Adak Island.

June 15. 01:47:20.1, ADK. Int. II on Adak Island.

June 22. 10:35:37.0 (20:35). Epicenter 51.25° N.,

Earthquake Descriptions (Alaska) 73

178.24° W., Andreanof Islands, at a depth of 49 km, USGS. Int. II on Adak Island.

June 27. 13:21:51.7, ADK. Int. II on Adak Island.July 5. 19:06:50.1, ADK. Int. II on Adak Island.July 13. 02:44:50.7 (12:44). Epicenter 61.49° N.,

145.01° W., southern Alaska, at a depth of 55 km, USGS. Int. IV at Chitina, Tonsina, and Valdez; int. Ill at Glenn- allen and Copper Center.

July 13. 04:48:50.0 (14:48). Epicenter 62.23° N., 151.22° W., central Alaska, at a depth of 85 km, USGS. Int. V at Talkeetna where all in home were awakened. Whole house shook. Also felt at Kashwitna (IV).

July 29. 01:37:44.0 (11:37). Epicenter 59.71° N., 152.73° W., southern Alaska, at a depth of 84 km, USGS. Int. V. Many awakened at Homer; few frightened.

July 30. 23:20:51.6 (July 31, 09:20). Epicenter 60.53° N., 150.05° W., Kenai Peninsula, at a depth of 44 km, USGS. Int. IV at Homer; int. Ill at Anchorage.

Aug. 5. 16:37:42.3 (Aug. 6, 02:37). Epicenter 60.25° N., 153.32° W., southern Alaska, at a depth of 136 km, USGS. Int. IV at Homer; also felt at Anchorage.

Aug. 11. 02:57:48.1 (12:57). Epicenter 66.02°N., 165.51° W., Alaska, at a depth of 33 km, USGS. Int. II. Felt on western Seward Peninsula.

Aug. 12. 17:46:20.3 (Aug. 13, 03:46). Epicenter 51.53° N., 178.11° W., Andreanof Islands, at a depth of 52 km, USGS. Int. V. Press reported slight damage at Adak. Dishes rattled; furniture moved.

Aug. 13. 19:34:54.4 (Aug. 14, 05:34). Epicenter 51.56° N., 178.15° W., Andreanof Islands, at a depth of 56 km, USGS. Int. II on Adak Island.

Aug. 15. 23:41:31.7 (Aug. 16, 09:41). Epicenter 51.50°N., 177.83° W., Andreanof Islands, at a depth of 46 km, USGS. Int. IV on Atka Island.

Aug. 20. 10:45:01.4 (20:45). Epicenter 52.24° N., 174.97° E., Rat Islands, at a depth of 58 km, USGS. Int. Ill on Shemya Island.

Aug. 21. 15:30 (probably Bering Daylight Time?). Seward Peninsula area. Int. III. Mild ground vibration felt outside by two persons at head of North Fork, Grand Central River, beneath east face of Mount Osborne. Rumbling earth noises.

Aug. 21. 17:58:31.6 (Aug. 22, 03:58). Epicenter 51.42°N., 176.32°W., Andreanof Islands, at a depth of 44 km, USGS. Int. II on Adak Island.

Aug. 24. 08:16:56.0 (18:16). Epicenter 51.66° N., 178.62° W., Andreanof Islands, at a depth of 66 km, USGS. Int. II on Adak Island.

Aug. 26. 07:14:57.9, ADK. Int. II on Adak Island.

Aug. 26. 09:44:32.7, ADK. Int. II on Adak Island.

Aug. 27. 09:24:55.0 (19:24). Epicenter 51.94° N., 178.84° W., Andreanof Islands, at a depth of 36 km, USGS. Int. II on Adak Island.

Aug. 27. 16:33:40.0, ADK. Int. II on Adak Island.Sept. 9. 19:26:19.3 (Sept. 10,05:26). Epicenter59.90°

N., 151.71° W., Kenai Peninsula, at a depth of 86 km, USGS. Int. V. Felt by all at Homer.

Sept. 11. 00:56:48.4 (10:56). Epicenter 60.27° N., 151.04° W., Kenai Peninsula, at a depth of 33 km, USGS. Int. V. All were awakened and frightened at Cohoe.

Sept. 24. 02:40:51.1, ADK. Int. II on Adak Island.Sept. 26. 17:36:25.7 (Sept. 27, 03:36). Epicenter

61.58°N., 149.95°W., southern Alaska, at a depth of 72 km, USGS. Int. Ill in Kashwitna-Willow area; int. II in Anchorage and Palmer.

Sept. 27. 16:51:54.0 (Sept. 28, 02:51). Epicenter 64.48° N., 147.73° W., central Alaska, at a depth of 30 km, USGS. Int. IV at College Observatory.

Oct. 3. 01:30:08.5, ADK. Int. II on Adak Island.Oct. 9. 06:00:04.7, COL. Int. IV at Fairbanks.Oct. 13. 05:26:14.4 (15:26). Epicenter 61.43° N.,

148.02°W., southern Alaska, at a depth of 51 km, USGS. Int. IV at Fairbanks.

Oct. 13. 15:20. Int. IV at Fairbanks; III at College.Nov. 4. 13:32. Int. Ill at Fairbanks.Nov. 7. 10:19. Int. IV at Shemya Air Force Base,

Shemya Island.Nov. 7. 08:45:41.1 (18:45). Epicenter 52.61° N.,

174.01° E., Near Islands, at adepth of 21 km, USGS. Int. IV at Shemya Air Force Base, Shemya Island.

Nov. 10. 15:20:01.4, COL. Int. II at College.Nov. 10. 19:17:51.0 (Nov. 11, 05:17). Epicenter

51.63° N., 178.11° W., Andreanof Islands, at a depth of 68 km, USGS. Int. V on Adak Island where minor dam age was reported.

Nov. 13. 18:48:54.7 (Nov. 14, 04:48). Epicenter 58.80° N., 154.62° W., Alaska Peninsula, at a depth of 37 km, USGS. Int. IV at Iliamna; int. HI in King Salmon- Homer area. Also felt at Seldovia.

Nov. 14: 19:43:43.0 (Nov. 15, 05:43). Epicenter 58.84° N., 154.45° W., Alaska Peninsula, at a depth of 60 km, USGS. Int. V at King Salmon where furniture shifted.

Nov. 15. 04:18:54.0, ADK. Int. II on Adak Island.

Nov. 27. 19:28:48.2 (Nov. 28, 05:28). Epicenter 51.87° N., 175.27° W., Andreanof Islands, at a depth of 63 km, USGS. Int. IV on Adak Island.

Nov. 27. 22:28:00.1, ADK. Int. II on Adak Island.Nov. 28. 08:27:02.8 (18:27). Epicenter 61.63° N.,

148.35° W., southern Alaska, at a depth of 12 km, USGS.


Int. II at Palmer.Nov. 30. 02:57:20.6 (12:57). Epicenter 53.27° N.,

172.96°E., Near Islands, at a depth of 17 km, USGS. Int. IV on Attu Island.

Nov. 30. 16:51:58.1 (Dec. 1, 02:51). Epicenter 51.56° N., 176.75° W., Andreanof Islands, at a depth of 55 km, USGS. Int. II on Adak Island.

Dec. 10. 05:00:58.0 (15:00). Epicenter 64.75° N., 149.05°W., central Alaska, at a depth of 61 km, USGS. Int. IV in Fairbanks area.

Dec. 21. 19:32:12.3 (Dec. 22, 05:32). Epicentei 51.44° N., 178.52° W., Andreanof Islands, at a depth of 55 km, USGS. Int. II on Adak Island.

Dec. 24. 16:49:13.0 (Dec. 25, 02:49). Epicenter 51.70° N., 174.64° E., Near Islands, at a depth of 40 km, USGS. Int. IV on Shemya Island.

Dec. 28. 12:03:33.6, ADK. Int. Ill on Adak Island.Dec. 29. 08:25:00.7 (18:25). Epicenter 61.60° N.,

150.51 ° W., southern Alaska, at a depth of 67 km, USGS. Int. V at Elmendorf Air Force Base, Talkeetna, Tyonek, and Wasilla; int. IV at Palmer; and int. Ill at Anchorage.

Dec. 29. 17:33:16.6 (Dec. 30, 03:33). Epicenter 61.98° N., 149.69° W., central Alaska, at a depth of 62 km, USGS. Felt strongly in Anchorage and Palmer areas. Felt at Talkeetna. Reports are confused with the earth quake at 08:25, Dec. 29, but this tremor probably is int. V also.

Dec. 31. 17:55:12.0 (Jan. 1, 03:55). Epicenter 61.90° N., 149.70° W., southern Alaska, at a depth of 66 km, mag. 5.9 (mb), USGS. Int. V. Minor damage in Anchorage-Palmer area. NOTE: This epicenter is not listed in table 1 of this publication.

HAWAII*[The following list includes felt earthquakes of magnitude ^3.0.

as determined by the Hawaiian Volcano Observatory. The time is given in Hawaiian standard. If an epicenter is quoted, Greenwich mean time is given in parentheses.]

Jan. 2. 06:27:51.6 (16:27). Epicenter 19° 13.9' N., 155°28.1' W., at a depth of 10 km. Int. H at Ainahou Ranch.

Jan. 8. 04:54:43.5 (14:54). Epicenter 19° 19.0' N., 155°13.5'W., at a depth of 8 km. Int. II at Ainahou Ranch and Hilo.

Jan. 12. 06:04:33.9 (16:04). Epicenter 19°20.7' N., 155°07.6' W., at a depth of 7 km. Int. II at Kamuela, Honokaa, Volcano, Kona, and Hilo.

Jan. 15. 22:06:46.5 (Jan. 16, 08:06). Epicenter

Prepared by Hawaiian Volcano Observatory. U.S. Geological Survey, Hawaii National Park. Hawaii.

19°46.9' N., 155°36.0' W., at a depth of 36km. Int. II at Waimea, Kealakekua, Captain Cook, and Keauhou- Kona.

Jan. 20. 10:27:50.2 (20:27). Epicenter 19°09.0' N., 155°41.7' W., at a depth of 6km. Int. II at South Kona.

Feb. 4. 18:16:54.0(Feb. 5,04:16). Epicenter 19°32.4' N., 155°54.1' W., at a depth of 8 km. Int. V. AtKailua- Kona, heavy metal sheets covering holes at a construction site were shifted (press). Also felt at Captain Cook and Kealakekua.

Feb. 5. 06:01:27.4 (16:01). Epicenter 19°09.0'N., 155°40.5'W., at a depth of 3 km. Int. II at South Kona.

Feb. 6. 04:39:25.0 (14:39). Epicenter 19°40.2' N., 156°00' W., at a depth of 30 km. Int. II on western Hawaii.

Feb. 8. 01:56:39.5 (11:56). Epicenter 19°29.5' N., 155°15.8' W., at a depth of 24 km. Int. II at Volcano and Glen wood.

Mar. 23. 23:39:07.7 (Mar. 24, 09:39). Epicenter 19°17.2'N., 155°11.8' W., at a depth of 7 km. Int. II at Ainahou Ranch, Mountainview, Glenwood, and Hilo.

Mar. 27. 22:58:53.6 (Mar. 28, 08:58). Epicenter 18°54.9'N., 155°32.9' W., at a depth of 42km. Int. II at Kahuku Ranch and Naalehu.

Apr. 4. 11:42:15.3 (21:42). Epicenter 19°21.5' N., 155°16.5' W., at a depth of 26 km. Int. II at Hilo.

Apr. 25. 02:06:55.1 (12:06). Epicenter 19° 19.2' N., 155°13.5' W., at a depth of 8 km. Int. II at Volcano, Kaiwiki, Hilo, and Glenwood.

Apr. 30. 02:44:00.4 (12:44). Epicenter 19°22.1' N., 155°04.9' W., at a depth of 0 km. Int. II at Volcano.

Apr. 30. 02:45:46.2 (12:45). Epicenter 19°22.1' N., 155°04.7' W., at a depth of 5 km. Int. II at Volcano.

May 5. 01:37:23.9 (11:37). Epicenter 19°20.9'N., 155°15.6' W., at a depth of 13 km. Int. II at Kona, Hilo, Volcano, Keaau, Kamuela, Kahuku Ranch, and Waiohinu.

June 3. 13:02:09.1 (23:02). Epicenter 19°25.2' N., 155°25.8' W., at a depth of 8 km. Int. II at Volcano, Hilo, Hawaii Volcanoes National Park, Glenwood, and Pahala.

June 19. 05:05:42.4 (15:05). Epicenter 19°21.7' N., 155°24.3'W.,atadepthof8km. Int. V.Feltlslandwide, but most strongly in Kau, Volcano, Puna, and Hilo areas. The press reported that dishes broke and objects fell from shelves in the Kau district.

June 19. 05:11:13.5 (15:11). Epicenter 19°21.5' N., 155°25.4' W., at a depth of 5 km. Int. II at Hilo, Kau, and Volcano.

June 19. 05:33:03.6 (15:33). Epicenter 19°22.1' N.,

Earthquake Descriptions (Hawaii) 75

155°24.6' W., at a depth of 7 km. Int. II at Hilo, Kau, and Volcano.

June 20. 20:50:26.4 (June 21, 06:50). Epicenter 19°20.0' N., 155°13.0' W., at a depth of 7 km. Int. Hat Volcano, Ainahou Ranch, Hilo, Kurtistown, Glenwood, Hawaii Volcanoes National Park, and Kona.

June 27. 15:44:42.9 (June 28, 01:44). Epicenter 19°25.0' N., 155°17.2' W., at a depth of 1 km. Int. II at Hawaii Volcanoes National Park.

July 11. 14:17:17.6 (July 12, 00:17). Epicenter 19°28.3'N., 155°26.6' W., at a depth of 8 km. Int. II at Kealakekua.

July 12. 15:32:59.0 (July 13, 01:32). Epicenter 19°27.0' N., 155°43.9' W., at a depth of 8 km. Int. II at Kainaliu.

July 13. 06:37:46.5 (16:37). Epicenter 19°21.4' N., 155°15.1' W., at a depth of 8 km. Int. II at Ainahou Ranch.

July 19. 04:38:48.3 (14:38). Epicenter 18°32.4' N., 155°17.6' W., at a depth of 8 km. Int. II at Volcano.

July 19. 05:00:02.9 (15:00). Epicenter 19°23.3' N., 155° 15.0' W., at a depth of 1 km. Int. II at Volcano and Hawaii Volcanoes National Park.

July 19. 11:22:02.9 (21:22). Epicenter 19°23.1' N., 155° 15.4' W., at a depth of 2 km. Int. II at Volcano and Hawaii Volcanoes National Park.

July 19. 16:41:48.0 (July 20, 02:41). Epicenter 19°48.3'N., 155°33.9'W., at a depth of 26 km. Int. II at Honokaa.

July 21. 18:07:50.5 (July 22, 04:07). Epicenter 19°19.5' N., 155°13.0' W., at a depth of 30 km. Int. II at Volcano and Hilo.

July 23. 18:13:02.3 (July 24, 04:13). Epicenter 19°23.4' N., 155°17.2' W., at a depth of 14 km. Int. II at Ainahou Ranch and Kapapala Ranch.

Aug. 7. 20:44:36.3 (Aug. 8, 06:44). Epicenter 19°28.7' N., 155°40.6' W., at a depth of 8 km. Int. II at Kona.

Aug. 8. 01:12:59.5 (11:12). Epicenter 19°21.4' N., 155° 18.2' W., at a depth of 27 km. Int. II at Honokaa, Glenwood, Hilo, Kapapala Ranch, Hawaii Volcanoes National Park, Volcano, Kona, and Puna.

Aug. 12. 11:26:20.5 (21:26). Epicenter 19°22.6' N., 155026.1' W., at a depth of 8 km. Int. II at Kapapala Ranch.

Aug. 17. 22:52:20.1 (Aug. 18, 08:52). Epicenter 19°47.8'N., 156°10.2' W., at a depth of 39 km. Int. II at Kona.

Aug. 20. 22:38:23.4 (Aug. 21, 08:38). Epicenter 19°33.3' N., 155°57.5' W., at a depth of 6 km. Int. II at Kealakekua.

Aug. 23. 18:15:01.9 (Aug. 24, 04:15). Epicenter 19°19.0' N., 155°13.5' W., at a depth of 8 km. Int. II at Hilo.

Aug. 27. 21:49:40.7 (Aug. 28, 07:49). Epicenter 19°19.9' N., 155°12.6' W., at a depth of 7 km. Int. II at Hilo, Keaau, Kurtistown, Pahoa, Honokaa, Laupahoehoe, Naalehu, Kapapala Ranch, Hookena, Holualoa, Mountainview, Volcano, Hawaii Volcanoes National Park, Pahala, and South Kona.

Sept. 17. 21:56:34.2 (Sept. 18, 07:56). Epicenter 19°23.6'N., 155°52.5' W., at a depth of 10km. Int. II at South Kona.

Sept. 19. 15:51:37.3 (Sept. 20, 01:51). Epicenter 19°46.8'N., 155°31.9' W., at a depth of 38 km. Int. II at Hilo.

Sept. 25. 20:18:49.7 (Sept. 26, 06:18). Epicenter 20°09.4' N., 155°33.1' W., at a depth of 40km. Int. II at Kamuela and Honokaa.

Oct. 15. 08:38:05.3 (18:38). Epicenter 19°25.5' N., 155°29.6' W., at a depth of 8 km. Int. II at Kapapala Ranch.

Oct. 26. 13:20:07.1 (23:20). Epicenter 19°19.8'N., 155°11.4' W., at a depth of 8 km-. Int. II at Hilo and Hawaii Volcanoes National Park.

Oct. 29. 18:57:32.2 (Oct. 30, 04:57). Epicenter 19°23.8'N., 155°24.6' W., at a depth of 8 km. Int. II at Pahala.

Oct. 31. 10:01:48.9 (20:01). Epicenter 19°22.2' N., 155°04.6' W., at a depth of 5 km. Int. II at Hilo, Kaimu, Pahoa, Glenwood, Kalapana, and Volcano.

Oct. 31. 10:45:22.1 (20:45). Epicenter 19°22.1' N., 155°04.4' W., at a depth of 6 km. Int. II at Hilo, Kaimu, and Volcano.

Nov. 9. 04:46:15.7 (14:46). Epicenter 19°22.6' N., 155°08.7' W., at a depth of 7 km. Int. II at Volcano.

Nov. 10. 01:53:14.7 (11:53). Epicenter 19°24.2' N., 155°25. T W., at a depth of 8 km. Int. II at Hilo, Volcano, Hawaii Volcanoes National Park, Onomea, Pahala, Hon okaa, Napoopoo, Kamuela, and Kurtistown.

Nov. 12. 18:59:04.1 (Nov. 13, 04:59). Epicenter 19°25.4' N., 155°17.1' W., at a depth of 2 km. Int. II at Volcano and Hawaii Volcanoes National Park.

Nov. 16.05:12:41.0(15:12). Epicenter 19° 11.6' N., 156° 13.6' W., at a depth of 18 km. Int. II at Napoopoo and South Kona.

Nov. 21. 21:49:14.7 (Nov. 22, 07:49). Epicenter 19°20.4'N., 155°18.5' W., at a depth of 29 km. Int. II at Hilo, Glenwood, Volcano, Hawaii Volcanoes National Park, Mountainview, Kapapala Ranch, Pahala, Honomu, Ainahou Ranch, Kamuela, South Kona, Kealakekua, Puna, Kau. Humakua. and Volcano.


Nov. 30. 03:54:23.4 (13:54). Epicenter 19°25.5' N., 155°24.7' W., at a depth of 7 km. Int. II. Felt Islandwide.

Nov. 30. 04:07:37.7 (14:07). Epicenter 19°29.5' N., 155°21.6' W., at a depth of 8 km. Int. II at Kamuela and Hilo.

Nov. 30. 04:46:54.8 (14:46). Epicenter 19°26.7' N., 155°23.3' W., at a depth of 8 km. Int. II at Hilo.

Dec. 7. 15:14:27.8 (Dec. 8,01:14). Epicenter 19°24.1' N., 155°26.4' W., at a depth of 8km. Int. II at Hilo and South Kona.

Dec. 8. 06:46:31.9 (16:46). Epicenter 19°25.5' N., 155°23.3' W., at a depth of 7 km. Int. II at Hilo.

Dec. 11. 00:39:05.3 (10:39). Epicenter 19°27.0' N., 155°35.r W., at a depth of 1 km. Int. II at Volcano.

Dec. 11. 03:49:52.7 (13:49). Epicenter 19°25.9' N., 155°33.9' W., at a depth of 6 km. Int. II at Hilo.

Dec. 12. 04:01:19.1 (14:01). Epicenter 19°22.0'N., 155°06.7'W., at a depth of 6 km. Int. II at Hilo.

Dec. 15. 10:53:47.4 (20:53). Epicenter 19°27.3'N., 155°35.9' W., at a depth of 4 km. Int. II at Volcano, Hawaii Volcanoes National Park, Kapapala Ranch, Mauna Loa summit cabin, Mauna Loa Observatory, and Hilo.

Dec. 15. 23:17:29.4 (Dec. 16, 09:17). Epicenter 19°23.9' N., 155°25.4' W., at a depth of 8 km. Int. Vat Ookala and Papaaloa; int. IV at Honokaa and Paauhau; int. I-III at Kapapala Ranch, Kailua-Kona, Volcano, Keaau, Hawaii Volcanoes National Park, Mountainview, South Kona, and Kealakekua.

Dec. 15. 23:30:35.7 (Dec. 16, 09:30). Epicenter 19°23.9'N., 155°25.7' W., at a depth of 8 km. Int. II at South Kona.

Dec. 16. 09:00:55.0 (19:00). Epicenter 19°24.3' N., 155°25.2' W., at a depth of 9 km. Int. II at Hawaii Volcanoes National Park, Kapapala Ranch, and Hilo.

Dec. 21. 08:18:03.9 (18:18). Epicenter 19°23.1' N., 155°26.5' W., at a depth of 8 km. Int. II at Volcano, Pahala, Hawaii Volcanoes National Park, and Hilo.

Dec. 25. 07:47:49.5 (17:47). Epicenter 19°19.6' N., 155°16.9' W., at a depth of 28 km. Int. II. Felt Island- wide, and on the Island of Oahu.

Dec. 25. 18:13:20.6 (Dec. 26, 04:13). Epicenter 19°13.6'N., 155°17.9' W., at a depth of 5 km. Int. II at Hilo, Volcano, Glenwood, Mountainview, and Pahala.

Dec. 25. 18:17:10.2 (Dec. 26, 04:17). Epicenter 19°13.8' N., 155°17.6' W., at a depth of 5 km. Int. II at Volcano and Hilo.

Dec. 25. 18:24:14.1 (Dec. 26, 04:24). Epicenter 19°13.5'N., 155°18.2' W., at a depth of 5 km. Int. Hat Hilo, Volcano, Glenwood, and Pahala.

Dec. 28. 17:02:38.1 (Dec. 29, 03:02). Epicenter 19°44.9' N., 156°02.8' W., at a depth of 4 km. Int. II at Keauhou-Kona and Kealakekua.

Dec. 28. 19:24:23.5 (Dec. 29, 05:24). Epicenter 19°21.2'N., 155°05.3'W., at a depth of 7 km. Int. II at Kahuku Ranch, Volcano, Papikou, Hilo, Hawaii Vol canoes National Park, and Glenwood.

Dec. 29. 17:22:10.6 (Dec. 30, 03:22). Epicenter 19°19.4' N., 155°17.0' W., at a depth of 29 km. Int. II. Felt Islandwide.

Dec. 30. 02:51:43.9 (12:51). Epicenter 19°24.1' N., 155°25.0' W., at a depth of 7 km. Int. II at Pahala.

Dec. 31. A swarm of earthquakes accompanied and followed an eruption of Kilauea Volcano on December 31, 1974. Many hundreds of earthquakes of about mag nitude 2.0 to 5.3 were felt by residents of Kapapala Ranch, Pahala, Volcano, and the Hawaii Volcanoes Na tional Park. Because of the continuously intense nature of the activity during this episode, much of the Hawaiian Volcano Observatory seismic records were obscured, and the following list of events may be incomplete.

Dec. 31. 00:30:27.0 (10:30). Epicenter 19°23.4' N., 155° 16.9' W., at a depth of 5 km. Int. II at Volcano, Kapapala Ranch, Pahala, and Hawaii Volcanoes National Park.

Dec. 31. 01:12:56.3 (11:12). Epicenter 19°22.1' N., 155°26.1' W., at a depth of 21 km. Int. II at Volcano, Kapapala Ranch, Pahala, and Hawaii Volcanoes National Park.




Dec. 31. 12:40:47.8 (22:40). Epicenter 19°17.4' N., 155°21.7' W., at a depth of 5 km. Int. V. Felt Islandwide; minor damage at Kapapala Ranch.


Dec. 31. 13:56:37.3 (23:56). Epicenter 19°20.4' N., 155°20.0' W., at a depth of 6 km. Int. II at Volcano,

Earthquake Descriptions (Hawaii) 77

Kapapala Ranch, Pahala, and Hawaii Volcanoes National Park.

Dec. 31. 14:39:21.8 (Jan. 1, 00:39). Epicenter 19° 19. I'M., 155°22.1' W., at a depth of 5 km. Int. II at Volcano, Kapapala Ranch, Pahala, Hawaii Volcanoes National Park, and South Kona.

Dec. 31. 14:49:13.7 (Jan. 1, 00:49). Epicenter 19°16.0'N., 155°21.6' W., at a depth of 0 km. Int. II at Hilo, Volcano, Kapapala Ranch, Pahala, and Hawaii Volcanoes National Park.

Dec. 31. 14:59:13.9 (Jan. 1, 00:59). Epicenter 19°17.0'N., 155°22.0' W., at a depth of 4 km. Int. II at Volcano, Kapapala Ranch, Pahala, and Hawaii Vol canoes National Park.

Dec. 31. 15:28:59.1 (Jan. 1, 01:28). Epicenter 19°01.3'N., 155°11.5' W., at a depth of 31km. Int. II at Hilo, Volcano, Kapapala Ranch, Pahala, and Hawaii Volcanoes National Park.



Dec. 31. 17:10:53.0 (Jan. 1, 03:10). Epicenter 19°18.6' N., 155°22.7' W., at a depth of 4 km. Int. II at Volcano, Kapapala Ranch, Pahala, and Hawaii Vol canoes National Park.




Dec. 31. 20:43:55.0 (Jan. 1, 06:43). Epicenter 19°17.9'N., 155°23.r W., at a depth of 5 km. Int. II at Hilo, Volcano, Kapapala Ranch, Pahala, and Hawaii Volcanoes National Park.

Dec. 31. 20:53:24.4 (Jan. 1, 06:53). Epicenter 19°15.0'N., 155°20.6' W., at a depth of 3 km. Int. II at

Volcano, Kapapala Ranch, Pahala, and Hawaii Vol canoes National Park.


Dec. 31. 21:41:54.0 (Jan. 1, 07:41). Epicenter 19°16.1' N., 155°21.5' W., at a depth of 5 km. Int. II at Hilo, Volcano, Kapapala Ranch, Pahala, and Hawaii Volcanoes National Park.

PANAMA CANAL ZONE[Time given is 75° meridian. Greenwich mean time is given in

parentheses.]

Dec. 19. 11:00:49.0 (16:00). Epicenter 7.40° N., 78.70° W., Panama, at a depth of 13 km, USGS. Int. II at Panama City, Panama, and at Balboa Heights, C.Z.

PUERTO RICO[Time given is 60° meridian. Greenwich mean time is given in

parentheses.]

Jan. 18. 12:52:43.1 (16:52). Epicenter 18.80° N., 69.40° W., Dominican Republic region, at a depth of 82 km, USGS. Int. II at Mayagiiez.

Mar. 16. 08:02:02.3 (12:02). Epicenter 18.45° N., 67.05° W., Mona Passage, at a depth of 96 km, USGS. Int. II at Boqueron, Guanica, Mayagiiez, and Rosario.

Aug. 29. 09:18:26.0 (13:18). Epicenter 17.83° N., 65.49° W., Puerto Rico region, at a depth of 33 km, USGS. Int. Ill at Mayagiiez.

Oct. 8. 05:50:58.1 (09:50). Epicenter 17.30° N., 62.00° W., Leeward Islands, at a depth of 47 km, USGS. Int. Villon Antigua and Barbuda. Int. VatFajardo,P.R.: int. IV at Guayama, Humacao, and Ponce; int. Ill at Roosevelt Roads, P.R. (U.S. Naval Station).

Oct. 26. 01:30:38.0 (05:30). Epicenter 18.42° N., 66.32° W., Puerto Rico region, at a depth of 93 km, USGS. Int. II at Cayey, Caguas, and San Juan.

VIRGIN ISLANDS

No earthquakes were reported felt in this area in 1974.

Principal Earthquakes of the World

Table 2 lists and briefly describes the principal earthquakes of the worldduring 1974. This list is included in the United States Earthquakes series because it is not available in this format in other earthquake reports. It includes earthquakes of magnitude 6.8 or greater; shocks of smaller magnitude that were locally destructive and/or caused fatalities; and tremors of unusual interest.

FIGURE 10. -View of destruction in the village ofPattan, West Pakistan, after December 28 earthquake. The shock took a toll of5,300 livesand injured 17,000. (USGS photo)

79

TABLE 2

- PRINCIPAL EARTHQUAKES OF

TH

E WORLD

DURING 19

7i»

(SOURCE. PRELIMINARY DETERMINATION OF EPICENTERS MONTHLY LISTING, PUBLISHED BY U.

S. GEOLOGICAL SURVEY.)

GEOGRAPHIC

DATE

ORIGIN TIME

COORDINATES

REGION

G.M.T.

LAT

LONG

H M

S DE

G.

OEG.

JAN

02

10

<*2

29

.9

22

.5S

068.<

4H

N

OR

TH

ER

N

CH

ILE

JAN

05

08

33

50.7

12.3

S

076.<

*H

NE

AR

C

OA

ST

OF

PE

RU

JAN

1

0

08

51

13

.3

1<*.

<*S

166.9

E

ME

N

HE

BR

IDE

S

ISLA

ND

S

JAN

3

1

23

30

05

.3

07.5

S

155.9

E

SO

LOM

ON

IS

LA

ND

S

FE

B

01

00

01

02.<

» 3

8.6

N

02

7.O

E

TU

RK

EY

FE

B

01

03

12

33

.1

07.<

*S

15

5.6

E

SO

LOM

ON

IS

LA

ND

S

AP

R

18

01

19

22

.6

06

.9N

0

72

.9W

N

OR

TH

ER

N

CO

LOM

BIA

MA

Y

08

23

33

25

.2

3<

t.5N

138.7

E

NE

AR

S

. C

OA

ST

O

F H

DN

5HU

, JA

PA

N

MA

Y

10

19

2

5

15.0

2

8.2

N

10<

».O

E

SZ

EC

HW

AN

P

RO

VIN

CE

, C

HIN

A

SE

E

FO

OT

NO

TE

S

AT

EN

D

OF

TA

BLE

RE

MA

RK

S

DE

PT

H

THREE INJURED, BUILDINGS

DAMAGED AT CALAMA.

TEN

KILLED, MANY INJURED,

AND

EXTENSIVE PROPERTY

DAMAGE IN

LIMA-YAUYOS

AREA.

FELT ON VANUA LAVA AND

AT

LUGANVILLE.

FELT AT ARAWA, PANGUNA,

KOROVOU, AND

SHORTLAND.

TSUNAdU RECORDED.

TWO

KILLED, 20 INJURED AT

IZMIR.

WIDELY FELT IN

REGION.

TSUNAMI GENERATED.

THREE DEATHS,

2 INJURIES,

SOME HOUSES DESTROYED AT

CEPITA AND

SAN ANORES.

TW

EN

TY

-SE

VE

N

KIL

LE

D,

73

002

INJU

RE

D,

AN

D

MA

JOR

P

RO

P

ER

TY

DA

MA

GE

O

N

IZU

P

EN

IN

SU

LA

.

CA

SU

ALT

IES

A

ND

P

RO

PE

RT

Y

Oil

DA

MA

GE

IN

C

HA

OT

UN

G-I

PIN

AREA.

USGS

OTHER

MAGNITUDE*

MAGNITUDE**

KM 105

096

03<»

03<*

029

0<*0

MB

MS

ML

6.<

4 6

. S

PA

S

6.3

6.6

PA

S

6.7

7.2

7.0

PA

S

6.0

7

.0

6.9

PA

S

5.2

5

.*»

6.2

7.1

6

.8P

AS

! S

ft.

on S c«j S1

& 3. s & 1<% &> '-. *o

5.0

6.0

6.5

6.2

6.8

6.7PAS

6.7PAS

TABLE

2 -

PRINCIPAL EARTHQUAKES OF THE WORLD DURING 19

7<»

- CONTINUED

DA

TE

GE

OG

RA

PH

IC

OR

IGIN

T

IME

C

OO

RD

INA

TE

SR

EG

ION

G.M

.T.

H M

SL

AT

LO

NG

O

EG

. D

EG

.

MA

Y

11

06

1<*

08.6

19.7

N

1<

*7.3

E

MA

RIA

NA

IS

LA

ND

S

RE

GIO

N

JUN

12

16

25

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Miscellaneous Activities

HORIZONTAL CONTROL SURVEYSFOR CRUSTAL MOVEMENT

STUDIES 1

In 1974, the following surveys for the study of horizon tal movements in the Earth's crust were made in Califor nia by NOAA's National Geodetic Survey.

Aqueduct Surveys-The cooperative project with the State of California Department of Water Resources was continued during 1974. Resurveys were accomplished at three sites along the aqueduct route: COLT, R1ALTO, and DEVIL.

The 1972 survey report stated that horizontal move ment at COLT and REALTO sites was opposite in direc tion to the accumulated changes from 1964 to 1970. From 1972 to 1974, the results indicate movement in agreement with that shown from 1964 to 1970. The average horizon tal change indicated about 3-mm right-lateral shift along the respective fault areas. Local movement continued at COLT F, but the movement was away from the fault. Since 1970, DEVIL has continued to show right-lateral movement. The amount of movement from 1970 to 1974 was about 13 mm.

TSUNAMIS2

Four tsunamis were reported to the National Oceanic and Atmospheric Administration during 1974, including one that was recorded on National Ocean Survey tide gages.

'Prepared by B.K. Meade, NOAA, National Ocean Survey. National Geodetic Survey, Rockville, Md.

Prepared by Mark G. Spaeth, NOAA, National Weather Service, Office of Meteorology and Oceanography, Silver Spring, Md.

An earthquake on January 31 (mag. 7.0 Ms) in the Solomon Islands (7.5° S., 155.9° E.) caused a local tsunami. A 1.2- to 1.5-m rise flooded the Korovu Police Station in the Shortland Islands. The tsunami was re corded on the Loloho (Anewa Bay) tide gage with an amplitude of 7 to 8 cm.

A second earthquake (mag. 7.1 Ms) in the Solomon Islands on February 1 (7.4° S., 155.6° E.) also gener ated a tsunami which caused minor damage on Choiseul Island and in the Shortland Islands. Amplitudes reached 3 to 4.5 m. The tsunami was recorded on the Honiara tide gage with an amplitude of 10 to 13 cm.

The Kuril Islands earthquake (mag. 6.7 Ms) of Sep tember 27 (43.2° N., 146.7° E.) caused a tsunami which was observed at Hanasaki, Japan, with 38-cm amplitude.

An earthquake (mag. 7.6 Ms) near the coast of Peru (12.3° S., 77.8° W.) on October 3 generated a tsunami that was widely observed. Representative maximum wave heights were: 1.83 m at Callao, Peru; 0.37 m at Hilo and Kahului, Hawaii; 0.30 m at Pagopago, American Samoa; 0.15 m at Crescent City, Calif., and 0.06 m at Midway and Wake Islands.

FLUCTUATIONS IN WELL-WATER LEVELS3

In 1943, the Coast and Geodetic Survey (now the Na tional Ocean Survey) first published the section on well- water fluctuations in its annual United States Earthquakes series. Data for the years 1944-49 appeared in the 1949 issue. From 1950 to the present, the material has been published annually in this series.

Table 3 lists fluctuations in well-water caused princi pally by earthquakes. Table 4 lists the date and location of specific events that may have caused fluctuations noted in

'Prepared by Kenneth L. Rennick. U.S. Geological Survey. Denver, Colo.

83


FIGURE 11.-A tsunami (seismic seawave) sweeps toward man (at left) on Hilo, Hawaii, beach in April 1946. This is one of the many unusual photographs available from NGSDC's newly developed earthquake photograph file. (J.W. Duncan photo)

table 3. Also included are the states in which fluctuations sociated with the fluctuations tabulated in table 3 may bewere recorded. obtained from the biweekly Preliminary Determination of

Complete information on earthquakes possibly as- Epicenters listings, published by the USGS.

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SEE FOOTNOTES AT END OF TABLE

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Strong-Motion Seismograph Data'INTRODUCTION

The U.S. Geological Survey Seismic Engineering Branch (previously called Seismological Field Survey) has conducted an engineering seismology program in the United States and Latin America since 1932. The Survey, with cooperation of state and municipal governments, private industry, and state and private educational institu tions, has installed and maintained strong-motion seis mographs and analyzed the records. Results of these analyses have been published in Government bulletins

- and scientific journals, and the records, either originals or copies, have been made available to research scientists.

A list of strong-motion stations in the United States and Central and South America is available from the Seismic Engineering Branch (address in footnote). This list, which gives the geographic location of each station and instru mental constants, has been cataloged through 1974.

Notes pertinent to this engineering seismology program may be found in preceding issues of the United States Earthquakes series, Geological Survey Circular 717-A, Seismic Engineering Program Report, Jan.-Mar. 1975, and in Publication 41-2, Earthquake Investigations in the Western United States, 1931-1964, U.S. Department of Commerce, Coast and Geodetic Survey, Washington, D.C., 1965. The latter is much broader in scope, contain ing data on structural and ground vibrations and detailed descriptions of the many activities that constitute the seismological program as a whole.

ACCELEROGRAPH RECORDS

More than 130 accelerograph records were obtained during 1974 from the national strong-motion instrumenta tion network operated by the U.S. Geological Survey. The recordings were largely from California, although Alaska, Hawaii, and South Carolina also were repre sented. The South Carolina earthquake occurred about 14 km from the accelerograph station at Citadel College in

'Prepared by Charles F. Knudson, U.S. Geological Survey, 355 Middlefield Rd., Menlo Park, Calif. Appreciation is extended to Virgilio Perez, Stephen Schwartz, Richard P. Maley, and Christopher Rojahn for their assistance in preparing this section.

Charleston. Most of the 30 Hawaiian shocks recorded between November 30, 1974, and January 5, 1975, were of volcanic origin. Several records also were obtained from earthquakes in Peru, Nicaragua, and near Panama.

The following paragraphs summarize the results of the most important earthquakes recorded in 1974:

Lima, Peru-Jan. 5, Oct. 3, and Nov. 9

Three large earthquakes were recorded at Lima, Peru, accelerograph stations within 70 to 90 km of the epicen ters. Two records were obtained from each shock, one from the standard instrument located at the Geophysical Institute and the second from a Kinemetrics SMA-1 that was relocated after each event. The January 5 earthquake, magnitude 6.3, occurred 73 and 79 km from the recording stations where respective maximum accelerations were 0.16 and 0.1 Ig. The November 9 shock, magnitude 7.2, was 90 and 94 km from the accelerographs; peak accelerations were, respectively, 0.14 and O.OSg. The October 3 event, magnitude 7.6 and largest of the three earthquakes, was located 85 and 91 km from the recording stations; maximum accelerations registered were 0.25 and 0.24g. Accelerations at the Geophysical Institute ex ceeded O.lg for a duration of 30 seconds and exhibited a relatively high frequency content, phenomena observed in other earthquakes recorded at this site.

Hollister, California, Nov. 28

A magnitude 5.2 earthquake occurred 10 km northwest of Hollister between the Calaveras and Sargent faults, apparently on an extension of the smaller southwest- trending Busch fault. Nine accelerographs were triggered within 80 km of the epicenter, including three instruments located nearly equidistant from the earthquake at 10 km. These ^atter sites showed maximum accelerations of 0. llg at Hollister City Hall, 0. 14g at Gilroy, and 0. 12g at San Juan Bautista. This was the fourth time in 27 years that accelerations greater than O.lg were recorded at Hollister and the second time in 1974 that O.lg had been exceeded at Gilroy. Several seismoscope records were obtained from the shock, including those from a pair

93


of instruments located on opposite sides of the San An- dreas fault at San Juan Bautista where the largest ampli tudes were polarized transverse to the direction of wave travel. Similar large directional responses have been ob served on seismoscope records from numerous other moderate-sized earthquakes.

Table 5 presents a listing of earthquakes recorded in 1974 and the maximum accelerations scaled from those considered most significant. The earthquakes are listed in chronological order and include locality, geographic coordinates, magnitude, and maximum intensity when available. This information has been gathered principally from Preliminary Determination of Epicenters, published by USGS. The recording stations for each earthquake are listed in alphabetical order with a brief description of the building in which the instrument is housed. Maximum accelerations are listed for those events where ground

accelerations were O.OSg or where amplitudes recorded in structures (other than at the basement or ground level) were more than O.lg. These criteria were arbitrarily adopted to reduce the amount of insignificant data re ported. Although the maximum recorded acceleration poorly defines the nature of motion at a site, it is the most easily and quickly obtained quantity. It should be pointed out that these measurements have no relation to frequency or duration of shaking, and, in fact, the amplitudes re corded as maximum accelerations were observed as only one or two prominent peaks in many instances.

Data published in this section differs slightly from that previously published by USGS in Circulars 717-A and 717-B. Some minor changes in epicenters and magnitudes have been made, and maximum accelerations for some events have been rescaled.

Strong-Motion Seismograph Data 95

TABLE 5 - SUMMARY OF ACCELEROGRAPH RECORDS OBTAINED FROM EARTHQUAKES IN 1974

Event

5 January 1974Lima, Peru12.30S - 76.40WMag 6.3

10 January 1974Hoi lister, CA36.96N - 121. 61WMag 4.4

Station LocationName

Lima, PeruZarate Station

Lima, PeruGeophys Institute(1 -story bldg)

Gilroy, CAGavilan College(1 -story bldg)

S-t TimeaCoord (sec)

12.02S 10.277.01W

12.07S77.04W

36.97N .7121.57W

Comp

LongVertTrans

UpN82WNOSE

S67WDownS13E

Max Accl u( g )

.16

.09

.16

.06

.09

.11

.05

.02

.09

Duration(sec)

7.5-

6.9

--2.8

_--

12 January 1974e Mauna Loa area, HI 19.34N - 155.03W Mag 4.7

A small-amplitude record was also obtained at Hollister, CA: City Hall (339 Fifth).

A small-amplitude record was obtained at Kilauea, HI: Camp Ground.

31 January 1974e Gilroy, CA 36.78N - 121.57W Mag 3.5

Gilroy, CA Gavilan College (1-story bldg)

36.97N 121.57W

S67W Down S13E

.08

.03

.16 .07

7 February 1974 Bear Valley, CA 36.57N - 121.19W Mag 3.2

A small-amplitude record was obtained at Bear Valley, CA: CDF Fire Station with an S-t time of 0.6 sec.

8 Feb-31 Oct 1974 Los Angeles, CA Unkwn loc & Mag

Los Angeles, CA 533 S Fremont (basement)

(sixth floor)

(roof-llth level)

34.05N118.26W

1.2 N30WS60W

UP

N30WS60W

UP

N30WS60W

Up

.06

.25

.06

.19

.16

.10

.07

.12

.10

-.25

-

.25

.151 peak

_1 peak

d

See footnotes at end of table.


TABLE 5 - SUMMARY OF ACCELEROGRAPH RECORDS OBTAINED FROM EARTHQUAKES IN 1974 - CONTINUED

Event

11 February 1974eLos Angeles, CA34. ION - 118. 27WMag 3.4

Station LocationName Coord

Los Angeles, CA 34.05N445 Figueroa Street 118.26W(basement)

(19th floor)

(39th floor)

Los Angeles, CA 34.05N420 S Grand 118.25W(basement)

(8th floor)

(15th Floor)

Los Angeles, CA 34.05N525 S Flower 118.26WNorth Tower(basement)

(24th floor)

(52d floor)

Los Angeles, CA 34.05N700 U 7th, store 118.26W(basement)

(4th floor)

(Roof -10th level)

S-t Time Comp(sec)

N52WDownS38W

N52WDownS38W

N52WDownS38W

S37WDownS53E

S37WDownS53E

S37WDownS53E

1.2 S52EDownN38E

S52EDownN38E

S52EDownN38E

N52WDownS38W

N52WDownS38W

N52WDownS38W

Max Accl( 9 )

.03

.04

.05

.07

.04

.02

.03

.04

.01

.10

.08

.08

.07

.07

.07

.05

.10

.03

.13

.09

.10

.01

.06

.02

.01

.03

.01

.09

.05

.18

.10

.06

.13

.14

.04

.16

Duration(sec)

.--

_--

_-~

1 peak--

_--

_1 peak

-

1 peak-

1 peak

mm

-

-

_

-

-

.

-

.08

1 peak_

.10

.13-

.22




Event

11 February 1974 (Cont.)


Los Angeles, CA 646 S Olive (basement)

(4th level)

(Roof-8th level)

CoordS-t Timec

(sec)Comp

34.05N 118.25W

Max Accl 1

S37WDownS53E

S37WDownS53ES37WDownS53E

.07

.05

.07

.09

.06

.05

.12

.08

.09

Duration (sec)

1 peak

Smaller amplitude records that may or may not be from the 11 FEB 74 event were also obtained at the following Los Angeles stations: 525 S Flower (South Tower), 750 Garland, 110 E Ninth St, 800 W Sixth St, 637 Wil- shire, 770 Wilshire, 1200 Wilshire, and 700 W Seventh St (tower).

5 March 1974 Managua, Nicaragua 12.3N - 86.4W Mag 5.8

Managua, Nicaragua 12.UN National University 86.27W (1-story bldg)

E-WDownN-S

.09

.05

.09

8 March 1974e San Fernando, CA 34.38N - 118.43W Mag 4.7

Los Angeles, CA 34.31N Jensen Filter Plant 118.50W (2-story bldg)

2.3 S25W Down S65E

.05

.03

.06

Smaller amplitude records were also obtained at Leona Valley (Ritter Ranch), Castaic Dam, Castaic: Old Ridge Route and the following Los Angeles stations: 8244 Orion, Sepulveda VA Hospital (Bldg 40), 15107 Van Owen, and UCLA (Reactor Lab).

1 Apr-16 Jul 1974 Los Angeles, CA Unkwn loc & Mag

Los Angeles, CA Bunker Hill

34.06N 118.25W

N41W Down S49W

.06

.05

.09

17 April 1974 Gilroy, CA 36.94N - 121.59W Mag 3.2

Gilroy, CA Gavilan College (1-story bldg)

36.97N 121.57W

.6 S67W Down S13E

.06

.02

.06

25 April 1974e Mauna Loa area, HI 19.32N - 155.22W Mag 4.0





Event Station Location Name______________Coord (sec)

S-t Time3 Comp Max Accl Duration0(sec)

5 May 1974C Mauna Loa area, HI 19.34N - 155.26W Mag 4.5

A small-amplitude record was obtained at Kilauea, H.I: Camp Ground.

5 May-7 Nov 1974 So Alaska Unkwn loc & Mag

Small-amplitude records were obtained at Anchorage, AK: Westward Hotel.

9 June 1974 China Lake, CA 35.53N - 117.45W Mag 4.0

A small-amplitude record was obtained at China Lake, CA: Naval Weapons Ctr.

12 June 1974 Hollister, CA 36.72N - 121.43W Mag 3.7

Almaden Winery Cienega Valley (1-story bldg)

36.75N 121.38W

N45W Down S45W

.06

.02

.03

Smaller amplitude records were also obtained at Sago Central and Sago East.

15 June 1974 36.72N - 121.41W Mag 3.0

A small-amplitude record was obtained at Almaden Winery: Cienega Valley.

19 June 1974e Mauna Loa area, HI 19.36N - 155.40W Mag 4.9


5 July 1974 Central Calif 36.55N - 121.18W Mag 3.1

Bear Valley, CA CDF Fire Station (1-story bldg)

36.57N .7 121.18W

S50E .04Down .02N40E .05

13 July 1974 Panama Canal Zone 7.70N - 77.70W Mag 7.3

A small-amplitude record was obtained at Panama Canal Zone: Canal Zone Administration Bldg.




Event

12 August 1974Aleutian Islands51.53N - 178. 11WMag 5.8

14 August 1974San Fernando, CA34.43N - 118. 37WMag 4.3

3 October 1974Lima, Peru12. SOS - 77. SOWMag 7.6

7 October 1974Oxnard, CA34.05N - 118. 97WMag 4.0

12 October 1974Hemet, CA33.72N - 116. 88WMag 3.5

9 November 1974Lima, Peru12.50S - 77. SOWMag 7.2

a K / "Station Location S-t Time Comp Max Accl Duration

Name Coord (sec) ( g )

A small -amplitude record was obtained at Adak, AK: Naval Base.

Pacoima Dam 34.34N N76W .06Abutment 118.40W Down .03

S14W .12

Kagel Canyon 34.30N S20E .06*12587 Dexter Park 118.38W Down .021(1 -story bldg) N70E .06Vasquez Rocks Park 34.49N North .10 1(small, prefab bldg) 118. 32W Down .06

WestSmaller amplitude records were also obtained at the following LosAngeles stations: Jensen Filtration Plant, 14123 Nordhoff, 8244Orion, and 14800 Ventura.

Lima, Peru 12.13S 8.6 Long .20Las Gardenias 76.97W Vert .16Huaco Residence Trans .25

Lima, Peru 12.07S Up .13Geophys Institute 77.04W N82W .24(1-story bldg) NOSE .21A small -amplitude record was obtained at Oxnard, CA: 500 Esplanade.

Hemet, CA 33.73N 2.7 N45E .09895 Stetson (Fire Sta) 116.98W Down .05(1-story bldg) N45W .05

Smaller amplitude records were also obtained at Anza: Post Office,Indio: Coachella Citrus Groves, and Palm Springs: Airport.

Lima, Peru - Long .11 1La Molina Station Vert .05

Trans .14

Lima, Peru 12.07S Up .03Geophys Institute 77.04W N82W .05(1 -story bldg) N08E .08

(sec)

-.06

__-

peak--

39.039.041.0

9.039.035.0

_-

peak_

1.1

__-




Event

10 November 1974Aleutian Islands51.63N - 178. 11WMag 5.8


Adak, AKNaval Base

Coord

51.88N176.58W

S-t Time(sec)

Comp

NorthDownWest

Max Acer( g )

.03

.03

.05

Duration(sec)

.--

22 November 1974 Charleston, SC 32.90N - 80.15W Mag 4.7

Charleston, SC Citadel College (1-story bldg)

32.79N 79.96W

East Down North

.01

.01

.01

28 November 1974 Hoi lister, CA 36.91N - 121.SOW Mag 5.2

Bear Valley, CA 36.64N Stone Canyon East 121.24W (1-story bldg)

Hoi lister, CA 36.85N City Hall (339 Fifth) 121.40W (1-story bldg)

San Juan Bautista, CA 36.86N 24 Polk Street 121.54W (1-story bldg)

Gilroy, CA 36.97N Gavilan College 121.57W (1-story bldg)

S03E Down N87E

1.8

1.6

,02 ,05 ,03

UPS01WN89W

S45EDownN45ES67WDownS23E

.07

.10

.17

.12

.05

.05

.14

.03

.10

1.25 .75

1 peak

.15

1 peak

Smaller amplitude records were also obtained at Capitol a: 405 Capitol a Avenue, Castle Rock Geophys Observatory, Corralitos: 1473 Eureka Canyon Road, San Jose: 8 S First; Bank of America, Santa Cruz: Univ ersity of California Observatory, and SAGO Vault.

A small-amplitude record was obtained at Ferndale, CA: Fire Stn.

Old City Hall/28 November 1974 Ferndale, CA 40.32N - 125.13W Mag 4.0

30 Nov - 2 Jan 1975 More than 15 shocks were recorded at Punuluu, Hawaii before, during and Mauna Loa area, HI after the 28 DEC 74 volcanic eruption on the flank of Kilauea. Mag 3.5 - 5.3


Strong-Motion Seismograph Data101


Event

6 December 1974 Los Angeles, CA 34.ION - 118.22W Mag 3.5

NameStation Location

Coord

6 December 1974 Calexico, CA 32.72N - 115.40W Mag 4.8

El Centro, CA 32.SON Meadows Union School 115.47W 2059 Bowker (1-story bldg)

El Centro, CA 32.79N Imperial Val Irrig Dist 115.55W 302 Commercial (2-story bldg)

S-t Time c (sec)

Comp

S52W Down S38E

N52E Down N38W

S52W Down N38E

Max Accl 1

.07

.01

.07

.01

.05

.11

.03

.16

Duration (sec)

Imperial, CA 32.83N S52W .11 .13 Imperial Val College 115.50WAdmin Bldg N38E .16 .22 (1-story bldg)

Small-amplitude records were also obtained from El Centro: Community Hospital (Imperial & Ross Streets), and from a second accelerograph at Imperial Valley Irrigation District.

Small-amplitude records were obtained at Los Angeles, CA: 1526 N Edgemont,

19 December 1974 San Gabriel, CA 34.08N - 118.08W Mag 3.7

Monterey Pk, CA 34.05N Garvey Reservoir 118.11W (Earth Dam)

1.5 S60W .04Down .02S30E .06

19 December 1974 San Gabriel, CA 34.07N - 118.08W Mag 3.4

A small-amplitude record was obtained at Monterey Pk, CA: Garvey Reservoir.

29 December 1974 Richmond, CA 37.96N - 122.36W Mag 3.529 December 1974 So Alaska 61.60N - 150.51W Mag 5.6

A small-amplitude record was obtained at Oakland, CA: 2730 Adeline St.

Small-amplitude records were obtained at Anchorage, AK: Westward Hotel, Government Hospital, and Post Office (605 W 4th St).




EventName

Station LocationCoord

S-t Timea Comp Max Accl b Duration0 (sec) ___ ( g ) (sec)>

31 December 1974 Hollister, CA 36.93N - 121.48W Mag 4.4

Small-amplitude records were obtained from Hollister, CA: City Hall (339 Fifth), and San Juan Bautista: 24 Polk Street (Fire Station).

31 December 1974 So Alaska 61.90N - 149.70W Mag 5.9

Anchorage, AK 61.19N Alaska Methodist Univ 149.SOW

Anchorage, AK 61.19N Government Hospital 149.89W

Anchorage, AK 61.22N Post Office 149.89W 605 W Fourth

Anchorage, AK 61.22N Westward Hotel 149.89W (basement)

(roof-23d level)

11.2

S45E Down N45E

SouthDownEast

East Down North

N45W Down S45W

N45W Down S45W

.07

.04

.09

.07

.05

.06

.05

.03 ,05

.02

.05

.12

.14 ,08

1 peak 1 peak

Talkeetna, AK FAA-VOR Bldg

62.SON 150.10W

9.0 N15W Down S75W

.07

.09

.08A small-amplitude record from an event of unknown time, location, and magnitude is also present on the above record.

S-wave minus trigger time.Unless otherwise noted, maximum acceleration recorded at ground or basement level.Data from the records are summarized only if the maximum acceleration is greater than0.05 g at ground stations or greater than 0.10 g at upper floors of buildings.Duration for which peaks of acceleration exceed 0.10 g.Only a partial record was obtained owing to a faint trace.A definite correlation between these events and records cannot be established.The indicated event is the most likely one to have triggered the instrument.Partial record.

Index of Town NamesALABAMA

HUXFORO 56

ALASKA

ADAK ISLAND 72,73,74AOAK 71,73ANCHORAGE 71,72,73, 7kANOREANOF ISLANDS 72,73,74ATTU ISLAND 74BOSWELL BAY 72CHITINA--73COHOE 73COLO BAY 72COLLEGE 72,73COLORADO 72COPPER CENTER--73CORDOVA--72ELMENOORF AIR FORCE BASE 74FAIRBANKS 71,72,73,74GLENNALLEN 71,73GOLD CREEK 72HAINES 72HOMER--73HOUSTON 72ILIAMNA--73KASHWITNA 73KING SALMON 73KOOIAK ISLANO--72KODIAK--72MANLEY HOT SPRINGS 72MONTANA 72NEAR ISLANDS 73,74PALMER 71,72,73,7**PORT HOLLER 72SANO POINT 72SELOOVIA 73SEWARD 72SHEEP MOUNTAIN LODGE 71SHEMYA ISLAND 73,7**SUTTON 71TALKEETNA 73,74TONSINA--73TYONEK 7**UNALASKA ISLAND--72VALDEZ 71,73WASILLA 71,72,74WILLOW 72,73WOODY ISLAND 72YAKUTAT 72

ARIZONA

NEW RIVER 65 YUMA 70

ARKANSAS

ARKAOELPHIA--57ARMOREL 64BEIFNE 573LUFF CITY 573LYTHEVILLE 6480NNEROALE 57GALE 57CAMCEN 57CCY 6<*OONALOSON--57DUMAS 6**EL DORAOO--57EMMET 57ENGLAND 64ETHEL 64FRIENDSHIP 57GUROON 57HARRELL 57HOPE--57HOT SPRINGS 57HUMNOKE 64HUMFHREY--64HUNTER 61KEISER--57KEO 64LEOLA 57LITTLE ROCK 57,64MABELVALE 57,64MAGNOLIA 57MALVERN 57MANNING 57MC CASKILL--57MC DOUGAL 57,63OKOLONA 57OZAN--57PRESCOTT 57SCOTT--64SHERIDAN 64SPARKMAN--57SWEET HOME--64TEXARKANA--57TINSMAN--57TUCKER 64VADEN 57WABBASEKA--64WHELAN SPRINGS--57WILSON--61

CALIFORNIA

ACTON 68 ADIN 65 AGOURA 68 ALHAM8RA--66,68 ALLEGHANY--67

103


CALIFORNIA (CONTINUED)

ALPINE 66,67,68,69 ALT ADEN A 66,68,69,70 ANAHEIM--66 ANGWIN 67 APPLE VALLEY 66 APTOS 70 ARCADIA--66,68 ARGUS 67 ARLETA 68 AROMAS 66,70 ATHERTON 67 BANNING 69 BAYSIDE--68 BEAUMONT 69 BECKWOURTH 67 BEN LOMOND 70 BERKELEY 67,70 BERRY CREEK 67 BEVERLY HILLS 68,69 BIEBER 65 BIG BASIN--66 BIG BEAR LAKE 66,70 BIG SUR--70 BISHOP--69 BLAIRSDEN--67 BOULDER CREEK 66,70 BRADLEY 70 BRAWLEY 69,70 BRIDGEPORT 69 BRIOGEVILLE 68 BROO'KDALE 70 BUR8ANK 66,68,70 CABAZON--66 CALABASAS 68 CALEXICO 70 CALIENTE 66 CALIFORNIA CITY 66 CALIMESA 66,69 CALISTOGA 67 CALPINE--67 CAMARILLO 69 CAMPBELL 70 CANOGA PARK 66,68 CAPITOLA 66,70 CARIBOU 67 CARMEL VALLEY 66,70 CARMEL 66,70 CASTRO VALLEY 70 CASTROVILLE 66,70 CENTRAL CITY 66 CHATSWORTH 68 CHINA LAKE 67 CHITTENOEN PASS 66 CHUALAR--70 CLIO 67


CL3VERDALE 67,68,69 COBB 67 COMPTON--66 CORONA--66 CORRALITOS 66 COVINA 70 CRESTLINE--66 CROWS LANDING 70 CULVER CITY--69 CUPERTINO 66,67,70 OALY CITY--70 DANA 65 DAY 6501 GIORGIO 66 OIABLO CANYON 69 DOBBINS 67 OOS PALOS--70 OOWNIEVILLE 67 DUNLAP--69 EAGLE ROCK 66,70 EAST HIGHLANDS 66 £L CENTRO 70 L CERRITO 70 EL MONTE 63 EL SEGUNDO--66 ESCONOIDO 66 ETIWANOA 67,68,70 EUREKA 67,68 FALL RIVER MILLS 65 FEATHER FALLS 67 FELTON 70 FERNDALE 65,68,69 FILLMORE--66 FLINTRIDGE 66 FONTANA 67 FORTUNA 67,68 FOUNTAIN VALLEY 63 FRAZIER PARK--66 FREEDOM 66,70 FREMONT 67,70 FRESNO 69,70 FRIANT--70 FULLERTON 68 GARDENA 66 GILROY 66,67,70 GLENBURN 65 GLENDALE 66,68,70 GRANADA HILLS 66 GRASS VALLEY 67 GREEN VALLEY LAKE 66 GREENFIELD 70 HALF MOON BAY 70 HAT CREEK--65 HATHAWAY PINES 70 HAWTHORNE 66,69

Index of Town Names 105


HEALOS8URG 67HEBER 70HEMET 66,68,69HESPERIA 66HIGHLAND PARK 66HIGHLAND 66HOLLISTER 66,68,69,70HOLLYWOOD 66,70HOLY CITY--70HUMBOLDT HILL 67HUNTINGTON PARK 70IMPERIAL VALLEY 69IMPERIAL 70INGLEWOOD 66,69INYOKERN 67IRVINGTON 67JAMESBURG 66JANESVILLE 67JOHANNESBURG 67JOHNSVILLE 67KENSINGTON 70KERNVILLE 69KING CITY 66,70LA CANADA 66,68,70LA CRESCENTA 66,70LA HONDA 66,67,70LA MIRAOA 68LA PORTE 67LA SELVA BEACH 70LAKE ARROWHEAD 68,69LAKE HUGHES 68LAKEVIEW 66LAKEWOOD 70LAMONT 66LANCASTER 68LAWNOALE 66,69LEBEC 66LOCH LOMOND 67LOMA LINDA 66LOMA MAR 70LONG BEACH 70LOOKOUT 65LORAINE--66LOS ALTOS 70LOS ANGELES 66,68,69,70LOS BANGS 70LOS FELIZ--66LOS GATOS 66LUCERNE VALLEY 66MALIBU 69MAMMOTH LAKES 69MANHATTAN BEACH 66,69MARICOPA 66MARINA DEL REY--69MARINA 66,70


MAYWOOD 66MC ARTHUR 65MC CLOUD 65METTLER 66MILPITAS 66,69,70MIRANDA 68MISSION SAN JOSE 67MOJAVE 66MONOLITH 66MONROVIA 66,68MONTEREY PARK 68MONTEREY 66,70MONTROSE--68MOORPARK 66MORENO 66MORGAN HILL 66,70MORRO BAY 69MOSS LANDING 66,67,70MOUNT HAMILTON 66MOUNT HERMON 66,70MOUNT WILSON 68NEVADA CITY--67NEWBURY PARK 68NEWHALL 66,68,69NEWMAN 70NORCO 66NORTH EDWARDS 66NORTH HOLLYWOOD 68,70NORTHRIDGE 68NUBIEBER 65NUEVO 66OAKLAND 68,70OXNARD 69PACHECO 66PACIFIC GROVE 66,70PACOIMA 66,68PALM SPRINGS 69PALO ALTO 67,70PALOS VERDES PENINSULA 66PANORAMA CITY 68PARADISE 67PASADENA 66,68,69PATTERSON 70PEBBLE BEACH 66PEPPERWOOD 57,68PERRIS 69PESCADERO 66,67,70PETALUMA 70PETROLIA 68PICO RIVERA--69PINOLE 70PIRU 66PITTSBURG 68PLACENTIA--63PLEASANTON 70

PONDOSA--65PORTOLA--67PRATTVILLE 67PUMPKIN CENTER 66QUINCY 67RANDSBURG 67RED MOUNTAIN 67REOLANDS 66,69REOONDO BEACH--66REDWOOD CITY--66,67,70REDWOOD VALLEY--67RESEDA 68RICHMOND 70RIDGECREST 67,69RIO DELL 67,68,69RIVERSIOE--66,69ROHNERT PARK 67ROSEMEAO 68RUNNING SPRINGS 66SALINAS--66,70SAN ARDO 70SAN 8ENITO CITY 70SAN BERNARDINO 66,68SAN BRUNO 70SAN DIEGO 67,68SAN FERNANDO 66,68,69SAN FRANCISCO 66,67,70SAN GABRIEL 70SAN GREGORIO 67SAN JOSE 66,69,70SAN JUAN BAUTISTA 66,69,70SAN LORENZO--70SAN LUIS OBISPO--69SAN MARTIN 66,70SAN MATED 66SAN PEDRO--66SANTA CLARA 66,70SANTA CRUZ 66,70SANTA MONICA 69,70SANTA ROSA 65,67SATTLEY--67SAUGUS 66,68SCOTIA--67,63,69SCOTTS VALLEY 66SEAL BEACH 69SEASICE--66,70SEELEY--70SHERMAN OAKS--66SIERRA CITY 67SIERRA MAORE 66,68,69,70SIERRAVILLE 67SILVER LAKE--66,70SIMI VALLEY--66,68SKYFOREST--66SLOAT--67


SOLEDAD--70SOLROMAR--69SCQL'EL 66SCUTH GATE--70SOUTH PASADENA 69,70SOUTH SAN FRANCISCO 66,70SPRING GARDEN--67STINSON BEACH--70STORRIE 67STRAWBERRY VALLEY 67SUN CITY 66,69SUN VALLEY 68SUNLAND--68SUNNYMEAD 66SUNNYVALE--66SUNOL 67SYLMAR 66TAFT--66TEHACHAPI 66TEMPLE CITY 66,68,70THOUSAND OAKS--66TIBURON--70TOPANGA 68,69TCRRANCE 66,69TRES PINOS 68TRINIDAD 69TRONA 67TUJUNGA 68VACAVILLE 70VALYERMO 68VAN NUYS--66VENICE--69VENTURA 68,69VERCUGO CITY--68VERNON--69VICTORVILLE 66VINTON--67WASHINGTON 67WATSONVILLE--66,67,7QWEST COVINA 68WEST LOS ANGELES 66WESTLEY--70WESTMINSTER-63WESTMORLAND 69WILLOW GLEN 70WIVTERHAVEN 70WOODLAND HILLS 66,63WRIGHTWOOD--68YUCAIPA 66,69

COLORADO

CLARK 6<*STEAMBOAT SPRINGS 6<*


DELAHARE

WILMINGTON--53

GEORGIA

APPLING 53ARNOLDSVILLE--53ATLANTA--53AUGUSTA 53AVERA 53AVONDALE--53BETHLEHEM--53BISHOP 53BOBBY BROWN STATE PARK 53BONAIRE--5380NEVILLE 53BOSTWICK 53BOWMAN--53BUFORD--53CANON 53CARLTON--53CLAXTON 56CONYERS--53COVINGTON 53CRAWFORD 53CRAWFOROVILLE 53CULLOOEN 53DAVISBORO 53OEARING--53OEMOREST 53DEWY ROSE 53ELBERTON 53EVANS 53EXPERIMENT-53FARMINGTON 53FRY f 3GIBSON 53GILLSVILLE 53GOUGH 53GRACEWOOC 53GREENSBORO 53GROVETOWN--53GWINNETT 53HADDOCK 53HAROWICK 53HARLEM--53HARTWELL--53HEPHZIBAH 53INDIAN SPRINGS 53KELLEY--53LEXINGTON--53LINCCLNTCN--53MACON--53MAOISON--53MANSFIELD--53MARIETTA 53

GEORGIA (CONTINUED)

HARTINEZ--53 MAYFIELD 53 MITCHELL--53 MONTICELLO 53 NORWOOD 53 OXFORD--53 PENFIELD 53 PHILOMATH 53 RAYLE 53 ROBINSON--53 ROUfcD OAK--53 RUTLEDGE--53 SHADY DALE--53 SHARON--53 SOCIAL CIRCLE 53 STATHAM 53 STONEWALL 53 THOMASTON--53 THOMSON--53 TOOMS30RO 53 UNION POINT--53 VANNA--53 WARRENTON--53 WASHINGTON--53 WHITE PLAINS--53 WINTERVILLE 53 ZEBULON 53

HAWAII

AINAHOU RANCH 74,75CAPTAIN COOK 74GLENWOOD--74,75,76HAWAII VOLCANOES NATL PK 74-77HILC 74,75,76,77HOLUALOA 75HONOKAA 74,75,76HONOMU--75HOOKENA 75HUMAKUA 75KAHUKU RANCH 74,76KAILUA-KONA 74,76KAIMU--75KAINALIU--75KAIWIKI--74KALAPANA 75KAMUELA--74,75,76KAPAPALA RANCH--75,76,77KAU--74,75KEAAU 74,75,76KEALAKEKUA--74,75,76KEAUHOU-KONA--74,76KCNA 74,75KURTISTOWN 75LAUPAHOEHOE--75

HAWAII (CONTINUED)

MAUNA LOA 76MOUNT A IN VIEW 7k, 75, 76NAALEHU 7<»,75NAPOOPOO--75OAHU ISLAND 76ONOMEA 75OOKALA 76PAAUHAU 76PAHALA 7^,75,76,77PAHQA--75PAPAALOA 76PAPAIKOU 76PUNA 7U,75SOUTH KONA 7^,75,76,77VOLCANO--7*f,75,76,77WAIMEA 7<tWAIOHINU--7<»

ILLINOIS

ADDIEVILLE 62 AKIN 62 AL8ION--59 ALEDO 62 ALHAMBRA 63 ALLENOALE--59 ALLERTON 60 ALMA 60 ALPHA 62 ALSEY 59 ALTO PASS 63 ALTON 62 ALVIN 59 ANNA 62 ANNAPOLIS 60 ARCOLA 62 ARENZVILLE 60 ARMINGTON 62 ARMSTRONG--59 ARROWSMITH 62 ARTHUR--60 ASHMORE--60 ASHTON--62 ASTORIA 59 ATHENS--59 ATLANTA 60 ATWOOD--59 AVA 60 BALOWIN--62 BARNHILL £0 BARRY 62 BEARDSTOWN 62 BEASON--60 8EAVERVILLE 60 BECKEMEYER 62

ILLINOIS (CONTINUED)

3ELKNAP--59 3ELLE RIVE 59 3ELLEVIEW 62 BELLEVILLE 59,63 BELLFLOWER 60 3ELLMONT--59 3EMENT 60 BENLO--60 BENTON 60 BERWICK 62 3ETHANY 62 BIBLE GROVE 60 BINGHAM 59 8IRCS--60 BLACKSTONE 62 3LUE MOUNO--6Q BLUFF SPRINGS 59 BLUFFS 62 3LUFORD 59 BOLES--60 BONE GAP 59 BONNIE 59,60 3RAIDWOOD 60 3RIOGEPORT--59 3RIMFIELD 59 3POAOLANOS 59 3ROCTON--59 3ROOKFIELO--62 3ROOKPORT 62 8ROUGHTON 60 BROWNFIELD--62 BROWNING 60 BROWNS 60 3ROWNSTOWN--59 8UCKLEY--62 3UCKNER--62 3ULFITT--60 8UNCOM8E--62 BUNKER HILL 60 BUREAU--62 3URNT PRAIRIE--59 3UTLER--62 CABERY--62 CACHE 60 CAIRO 63 CALHOUN 60 CAMARGO 60 CAMBRIDGE--62 CAMPBELL HILL 60 CANTON--60 CARBON CLIFF 62 CARLINVILLE 60 CARLOCK--62 CARLYLE 60 CARMI--60



CARRIERS MILLS--60CARROLLTON 60CASEY--59CASEYVILLE 63CATLIN--60CAVE IN ROCK 62CERRO GOROO 59CHAM8ERSBURG 62CHAMPAIGN 60CHATHAM--60CHE8ANSE 62CHESTERFIELO--60CHICAGO 62CHRISMAN 60CHRISTOPHER--62CISCO--62CISNE--60CISSNA PARK 62CLAREMONT--53CLAY CITY--60,62CLAYTONVILLE 50CLINTON 60C080EN--59COELLO 62COFFEEN--60COLLINSVILLE 62COLLISON 59COLMAR 62COLONA--59COLP--60COLUMBIA-60CORNLANO 60COTTAGE HILLS--63COWDEN 60CREAL SPRINGS--60CRESCENT CITY--62CROPSEY 60CROSSVILLE 60CURRAN--60CUTLER--60CYPRESS--62QAHLGREN 60DALE 60OALTON CITY--62OANFORTH 62OANVERS--62DANVILLE 60OAWSON--60OE LAND--60OE SOTO--62OECATUR 6GDELAVAN--62OENNISON 60DEWEY--60OEWITT 60


DIETERICH 62OIVERNON--60OIX 60DONGOLA 62DONNELLSON--60DONOVAN 60OCRSEY 62OOW--62DOWELL--60DU QUOIN--60QUBCIS 62DUNDAS 60DUNFERMLINE 62OUPC--62EAGARVILLE--60EAST CARONDELET--62EAST LYNN--60EAST MOLINE--62EAST PEORIA--62EAST SAINT LOUIS 58,62 , 63EODYVILLE--60EOGEWOOO--60EDIN8URG--60EDWAROSVILLE--6Q,63EFFINGHAM--60ELDORADO--60ELIZA3ETHTOWN--62ELKHART 60ELLERY 60ELMWOOO 62ELWIN--60,62EMDEN 60EMMA 60ENERGY--60ENFIELD 50EQUALITY--60EVANSVILLE--60,63EWING 60FAIRBURY 62FAIPFIELD--60FAIRMOUNT--6QFANCY PRAIRIE 62FARINA 60FARMER CITY--62 FARMERSVILLE 60 FARMINGTCN 60 FIDELITY--62FIELDON 60 FILLMORE--60 FINDLAY 60 FISHER--62 FITHIAN 60 FLANAGAN--62 FLAT ROCK--60 FLORA--60



FOOSLAND 62 FORREST--60 FORSYTH 60 FREDERICK 60 FREEPORT--62 FULTS 60 GALATIA 60 GALE 62 GALESBURG--62 GARRETT 60 GAYS 61 GEFF 60 GENESEO 62 GEORGETOWN 61 GI8SON CITY 60 GIFFORO 60 GILLESPIE--61 GILMAN 62 GIRARO--61 GLEN CARSON 62,63 GLENARM 61 GOLCONOA 61 GOLDENGATE 60 GOOD HOPE 62 GOOOFIELD 60 GOOOWINE 60 GOREVILLE 61 GRAFTON 62 GRAND CHAIN 61 GRAND TOWER 62 GRANITE CITY 63 GRANT PARK 62 GRAYVILLE 60 GREEN VALLEY 61 GREENFIELO 61 GREENVIEW 61 GREENVILLE 61 HAGARSTOWN 61 HAMBURG 62 HAMMONO 61 HARCO 61 HARDIN--61 HARRISTOWN 60 HARTFORD 61,63 HARVEL--62 HAVANA--62 HAZEL CREST--62 HAZEL DELL 60 HECKER--60 HENNING 61 HERALD--6Q HEROO--62 HERRICK--61 HERRIN 61 HERSCHER 60


HEYWORTH 61 HIDALGO--61 HIGHLAND--61,63 HILLS80RO--60 HINCS80RO 61 HOLDER 62 HOMER 60 HOOPESTON 60 HOPKINS PARK 62 HCYLETON 60 HUMBOLDT 62 HUME 61 HUNTSVILLE 62 HUTSONVILLE 60 ILLINOIS CITY 61 ILLIOPOLIS 61 INDIANOLA 61 INGRAHAM--60 IOLA 60 IPAVA--62 IRVING 61 IRVINGTON--62 IVESDALE--62 JACKSONVILLE 61 JANESVILLE 61 JERSEYVILLE--61 JEWETT 60 JOHNSTON CITY--61 JONESBORO--61,63 JOPPA--61 JUNCTION 61 KAMPSVILLE--61 KANE--62 KANSAS 61 KARBERS RIDGE 61 KEENS8URG--60 KELL--61 KENNEY--60 KEWANEE 61 KEYESPORT--62 KIL80URNE 60 KINCAID 60 KINMUNDY 61 KINSMAN 62 KIRKWOOD 60 LA CLEDGE--60 LA PLACE--61 LA PRAIRIE--61 LAKE CITY--60 LAKE FORK--61 LAKEWOOD 60 LANCASTER--58,59 LANE--62LANGLEYVILLE--61 LATHAH--62

LAWRENCEVILLE 60 LE ROY--62 LEBANON 62,63 LERNA 62 LEWISTOWN--61 LIBERTY 62 LINCOLN 62 LITCHFIELO 62 LITERBERRY 60 LIVERPOOL 62 LOGAN 61 LONG POINT 61 LONGVIEW 61 LOOGOOTEE 60 LOSTANT 61 LOUISVILLE 61 LOVEJOY 60 LOVINGTON 62 LOWOER--62 LOWPOINT 62 LUOLCW--61 LYNOON--62 MACEDONIA 62 MACKINAW 60 MAHOMET 61 MANCHESTER--60 MANSFIELD 61 MAPLETON 61 MAQUON 62 MARINE--61,63 MARION 60 MARISSA 61,6<» MARSEILLES 61 MARSHALL 61 MARTINSVILLE 60 MARYVILLE 61,63 MASCOUTAH 61,63 MASON CITY 60 MASON 60 MATHERVILLE--62 MATTOON 60 MAUNIE 61 MC LEAN 61 MC LEANSBORO 60 MC NABB 62 MECHANICS8URG 60 MELVIN 60 MERNA 62 METCALF--61 MICHAEL 60 MIDDLETOWN 60 MILFORD 62 MILL SHOALS--61 MILMINE 62 MILTON 60


WINTER 60 MITCHELL--63 MODE 60 MODESTO 61 MODOC 62 MONEE 62 MONMOUTH 62 HONROE CENTER 60 MONTICELLO 61 MONTROSE--60 MORPISONVILLE 61 MOUNDS--61 MOUNT AU8URN--61 MOUNT CARMEL 60 MOUNT CLARE 61 MOUNT ERIE 61 MOUNT PULASKI 60 MOUNT ZION--61 MOWEAQUA 62 MUDDY 62MULBERRY GROVE 61 MUNCIE--61 MURDOCK 60 MURPHYSBORO--62 MURRAYVILLE 61 NASHVILLE--62 NEBO 62 NEOGA 60 NEW ATHENS 61 NEW BADEN 63 NEW BERLIN 61 NEW BURNSIQE 62 NEW HAVEN 61 NEW HOLLAND 60 NEW LIBERTY 62 NEW MEMPHIS--62 NEW MINDEN--63 NEWMAN 61 NEWTON 61 NIANTIC 61 NILWOOO 60 NOBLE 60 NOKOMIS--60 MORRIS CITY 61 0 FALLON 63 OAKOALE 60,63 OAKLEY 60 OAKWOOO 60 OBLONG 60 OCONEE--61 ODIN--60 OGDEN--60 OHLMAN 60 OLIVE BRANCH 62 OLIVET--60



OLMSTEQ--62,63OLNEY--60OMAHA--61ONARGA 60OPOYKE 60ORAVILLE 62ORCHARDVILLE 60OPEANA--60ORIENT--61OWANECO--60PALESTINE 60PALMER--60PALMYRA 61PALOMA--62PALOS HEIGHTS--60PANA 60PANAMA--61PARIS 61PARKERS8URG--60PATOKA--61PAWNEE 61PAXTON 61PEARL--61PEKIN--6QPENFIELO 61PEORIA 60PERCY--61PERKS 57,62PESOTUM 60PETERSBURG--60PHILO--60PIASA--62,63PIERRON--62PIERSON STATION--62PINCKNEYVILLE--61PINKSTAFF 61PITTS8URG--61PLAINVIEH--6Q,63PLAINVILLE--62PLANO--61PLATO CENTER 62PLEASANT HILL--61PLEASANT PLAINS--62PLYMOUTH 62PONTOOSUC--62POTOMAC--60PULASKI--61FUTNAM--62RADOM 60RALEIGH--61RANKIN--62RANTOUL--62RAROIN--62RAYMOND--61RED BUD--61


REDDICK--62REDMON--60RENAULT--63RIDGE FARM--61RIDGWAY--60RIMARD--60RIVERTON--61ROBERTS--62R08INSON--60ROCKPORT--60ROCKWOOD--61ROODHOUSE--61ROSAMOND--61ROSEBUD--62ROSICLARE--61ROSSVILLE--61ROXANA--63ROYAL--62ROYALTON 57,61RUSHVILLE--62SAILOR SPRINGS--60SAINT CHARLES--62SAINT CLAIR--63SAINT ELMO--61SAINT FRANCISVILLE--60SAINT JACOB--61,63SAINT JOSEPH 61SAINT LIBORY--61SAINT PETER--60SAINTE MARIE 60SALEM 60SAN JOSE--613ANDOVAL--61SAVOY 60SAWYERVILLE--61SAYBROOK 62SCHELLER--61SCOTT AIR FORCE BASE 63SCOTTVILLE--62SERENA--61SESSER--61SEYMOUR 62SHELBYVILLE--60SHELOON 62SHERMAN--62SHIPMAN 62,63SHOBONIER--60SHUMWAY 61SIBLEY--62SIDELL--60SIDNEY--61SIGEL--60SIMPSON--60SIMS--61SMITHTON--61



SORENTO--61 SOUTH PEKIN--61 SOUTH SAINT LOUIS 58 SPARTA 62,6** SPRINGERTON--61 SPRINGFIELO--61 STAUNTON 61 STEELEVILLE--61 STEWAPOSON--60 STONEFORT 62 STONINGTON 61 STOY--61 STRAS8URG--61 STRONGHURST 62 SULLIVAN-61 SUMMER HILL--60 SUMMERFIELO 61 SUMMUM--62 TALLULA 61 TAMAROA 60 TAMMS--61 TAYLORVILLE 61 TEMPLE HILL 62 TENNESSEE 61 TEUTOPOLIS--61 TEXICO 60,63 THAWVILLE--61 THAYER--61 THOMAS90RO 62 TILOEN 61TIMEWELL 62TOLEDO 61 TOLONO 60 TOULON--62 TOWANDA 61 TONER HILL 60 TRENTON 61,63 TRILLA--62 TROY GROVE--61 TROY--61,63 TUNNEL HILL 62 TUSCOLA--61 ULLIN--62 UTICA--62 VALIEP--61 VALMEYER 62 VANDALIA 61 VENEOY--61 VERGENNES--62 VERMILION--60 VERNON--62 VILLA GROVE--62 VILLA PARK 62 VIOLA--62 VIROEN--60


VIRGINIA--60WAGGONER--60WALSHVILLE--61WALTONVILLE--60WARRENSBURG 60WASHINGTON--62WATERLOO--62WATSEKA--60WATSON--60WAYNE CITY--60WAYNE 60WAYNESVILLE--61WELDON--62WELGE--61WELLINGTON--62WEST LIBERTY--60WFST SALEM--58,59WEST UNION 61WEST YORK--60WESTERVELT 62WESTFIELD--61WESTVILLE--60WHEELER--61WHITE HALL--62WHITTINGTON--62WILLIAMSON--62WILLIAMSVILLE 60WILLISVILLE--61WILLOW HILL--60WILLOW SPRINGS 61WINCHESTER--60WITT 60WOLF LAKE 62WOOOLANO--62WOODLAWN--62WCRDEN--62WRIGHTS--62WYOMING--61XENIA--60YALE 61

INDIANA

ADVANCE 60AKRON 62ALAMO--60ALBANY--61ALFORDSVILLE--62AMBIA--61AMBOY--60AMO 61ANDERSON 61ANDREWS--61APCAOIA--62ARLINGTON 60

INDIANA (CONTINUED)

ATLANTA 62 ATTICA 60, 6<» AUSTIN 63 BAINBRIOGE 60 BARGERSVILLE--61 BATTLE GROUND 62 BEDFORD 61 BEECH GROVE-62 BELLMORE 61 8ENNINGTON 61 BENTONVIUE 62 BERNE 61 BETHLEHEM 60 BEVERLY SHORES 61 BICKNELL 60 BIPPUS 61 BIROSEYE 61 8LANFORO 60 8LOOMFIELO 61 BLOOMINGTON 61 BOGGSTOWN 60 BOONE GROVE 62 BOONVILLE 60 BOWLING GREEN 60 BRADFORD 61 BRANCHVILLE 62 BRAZIL--61 BRIDGETON--60 BRISTOH 61 BROOK 60 BROOKLYN 60 BROOKVILLE 60 BROMNSBURG 60 BROHNSTOWN 62 BROWNSVILLE 60 8RUCEVILLE 61 BUCK CREEK 61 BUCKSKIN 61 BUFFALO 60 BUFFALOVILLE 60 BURLINGTON 61 BURROWS 62 BUTLERVILLE 61 CAMBRIDGE CITY 60 CAMBY 60 CANNELBURG 60,62 CANNELTON 61 CARBON 61 CARLISLE 61 CARMEL--62 CARTERSBURG 61 CATES--61 CAYUGA--61 CEDAR GROVE 60 CELESTINE--61

INDIANA (CONTINUED)

CENTERPOINT 60 CENTERTON--60 CENTERVILLE 60 CENTRAL 62 CHARLESTCWN 61 CHESTERFIELD 62 CHESTERTON 61 CHRISNEY 61 CHURUBUSCO 62 CLARKSBURG 62 CLARKSVILLE 61 CLAY CITY 60 CLAYPOOL 62 CLAYTON 60 CLIFFORD 61 CLINTON 60 CLOVEROALE 60 COAL CITY 61 COALMONT--60 COATSVILLE 61 COLUMBIA CITY 62 COLUMBUS 61 COMMISKEY--60 CONNERSVILLE--60 CONVERSE 61 CORTLANO 61 CORY 61 CORYOON 60 COVINGTON 61 CRAIGVILLE 60 CRANDALL 60 CRAWFOROSVILLE 60 CUTLER 58,60 CYNTHIANA 61 DALE 60 OALEVILLE 61 DANA 62 DANVILLE 60 DARLINGTON 61 DAYTON--62 OECKER 60 DELPHI 60 OEMOTTE 62 DERBY 61 DILLSBORO 62 DUBLIN 60 DUBOIS 61 OUGGER 61 DUNKIRK 62 DYER 62 ECKERTY 60 EDINBURG--61 EDWARDSPORT 60 ELBERFELD 61 ELIZABETH 60


INDIANA (CONTINUED)

ELWOOD 60 EMINENCE 60 EMISON--6Q EVANSTON 61 EVANSVILLE 60 FAIRBANKS 61 FAIRMOUNT--62 FARMERSBURG 61 FERDINAND 61 FILLMORE 60 FLAT ROCK 62 FLORA 61 FLOYOS KNOBS 61 FONTANET 62 FOREST 60 FORT BRANCH 60 FORT RITNER--62 FORT WAYNE 62 FOWLER--62 FOWLERTON 62 FRANCESVILLE 61 FRANCISCO 60 FRANKFORT-62 FRANKTON--62 FREEDOM 60 FREELANOVILLE 61 FREETOWN 61 FREMONT 60 FRENCH LICK 60 FULOA 61 GALVESTON 62 GAS CITY 60 GENEVA--61 GENTRYVILLE 61 GLENWOOD 60 GOLDSMITH--62 GOODLAND 61 GOSHEN 61 GOSPORT--61 GRAND VIEW 60 GRANTSBURG 62 GRAYSVILLE 60 GREENCASTLE 60 GREENFIELD 62 GREENSBORO 61 GREENS8URG 61 GREENTOWN 60 GREENVILLE 61 GREENWOOD 61 GRIFFIN 60 GROVERTOWN 61 GWYNNEVILLE 60 HALL 62 HANNA 62 HARDINSBURG--62

INDIANA (CONTINUED)

HARMONY 61 HARRODS8URG--62 HARTFORD CITY 62 HARTSVILLE 62 HATFIELD--60 HAUBSTADT 60 HAZLETON--60 HEBRON 60 HELMER--62 HELMS8URG--62 HELTONVILLE 60 HEMLOCK 60 HENRYVILLE--60 HILLISBURG 61 HILLS80RQ 61 HILLSOALE 58,59 HOAGLAND 62 HOBBS 62 HOLLAND 60 HOMER--62 HOPE 62 HUNTINGBURG--61 HURON--62 HYMERA--61 IDAVILLE 62 INDIAN SPRINGS 60 INDIANAPOLIS 60 INGALLS 62 INGLEFIELD 60 IRELAND 61 JAMESTOWN--62 JASONVILLE 62 JASPER 61 JONESVILLE 60 JUOSON 60 KEMPTON 61 KENTLAND 61 KINGMAN 60 KIRKLIN 61 KNIGHTSTOWN--61 KNIGHTSVILLE 60 KOKOMO 60 KOLEEN 60 KOUTS 62 KURTZ--62 KYANA--60 LA FONTAINE 61 LADOGA 61 LAFAYETTE--61 LAKETON 62 LANESVILLE 62 LAPEL 60 LAUREL 62 LEBANON 61 LEIFSIC 62


INDIANA (CONTINUED)

LEOPOLD 62LEROY 62LEHIS 60LI8ERTY--6QLINCOLN CITY 60LINN GROVE-62LINTON--60LITTLE YORK 61LIZTON--61LOOGOOTEE 61LYNN 60LYNNVILLE 61MACKEY--61MAGNET--61MANILLA 61MARIAH HILL 60MARION--62MARSHALL 61MARSHFIELO 61MARTINSVILLE 62MATTHEWS 62MAUCKPORT--6QMAXWELL 62MAYS 61MC COROSVILLE 61MECCA--61MEOARYVILLE 60MEOORA 60MELLOTT--60MEROM 60METAMORA 61MEXICO 60MIAMI--61MIDLANO--61MILTON--62MITCHELL 61MONROE CITY--60MONROEVILLE 61MONROVIA 60MONTEZUMA--6QMONTGOMERY 61MONTMORENCI 61MONTPELIER 62MORGANTOWN 60MORRISTOWN 61MOUNT SAINT FRANCIS--60MOUNT VERNON--60MULBERRY 61MUNCIE--6QNEBRASKA 62NEEDHAM 61NEW GOSHEN 60NEW HARMONY--61NEW HAVEN--61NEW LEBANON--60

INDIANA (CONTINUED)

NEW LISBON 62NEW MARKET--60NEW MIDDLETOWN 60NEW PALESTINE--60NEW ROSS--60NEW SALISBURY--61NEW WASHINGTON--62NEW WHITELANO--61NEWBERRY--61NEWBURGH--60NEWPORT--60NEWTOWN--60NINEVEH 61NOBLESVILLE--62NORMAN--61NORTH SALEM--62NORTH VERNON--62OAKFORD--62OAKLAND CITY 60OAKTOWN--61OAKVILLE--62ODON 60ONWARQ 62OOLITIC--61OPA--62ORESTES--61ORLEANS 61OTWELL 60OWENS8URG--61OWENSVILLE--60OXFORO--60PALMYRA--62PAOLI--62PARAGON 60PARIS CROSSING 62PARKER--62PATOKA 60PATRICKSBURG--60PAXTON--60PEKIN 62PENCE--61PENCLETON--61PENNVILLE--61PFRSHING--62PERU 62PETERSBURG 61PIMENTO 60PITTS30RO 60PLAINVILLE--60POLAND 60PONETO 62 PORTLAND--61POSEYVILLE--61 PRAIRIE CREEK 60 PRAIRIETON 61


INDIANA (CONTINUED)

PRINCETON--60 QUINCY--61 RAGSDALE 61 RAUB 62 REELSVILLE 60 REMINGTON 61 REYNOLDS 62 RICHLANO 60 RICHMOND 61 RIOGEVILLE 62 ROACHDALE 60 ROANN 62 ROCKFIELD 62 ROCKPOPT 61 ROCKVILLE--6Q ROME CITY 62 ROME 62 ROSEDALE 60 ROSSVILLE 60 RUSHVILLE 61 RUSK 60RUSSELLVILLE 60 RUSSIAVILLE 61 SAINT ANTHONY--61 SAINT BERNICE 60 SAINT CROIX--61 SAINT MEINRAQ 60 SAINT PAUL 61 SALAMONIA--61 SALEM--60 SAN PIERRE 61 SANDBORN 60 SANDFORD--60 SANTA CLAUS 60,61 SCHNEIDER 62 SCHNELLVILLE 61 SCIPIO 62 SCIRCLEVILLE 60 SCOTLAND 61 SCOTTSBURG 60 SEDALIA--61 SEELYVILLE 61 SELLERSBURG 62 SELMA--62 SEYMOUR 60 SHARPSVILLE--60 SHELBURN 61 SHELBYVILLE--60 SHEPAROSVILLE--60 SHERIDAN 60 SHOALS--61 SIBERIA--60 SILVER LAKE--61 SIMS 61 SMITHVILLE--61

INDIANA (CONTINUED)

SOLSBERRY--60SOMERSET 62SOMERVILLE--61SOUTH WHITLEY--62SPENCER--60SFENCERVILLE 62SPICELAND--61SPRINGPORT 60SPRINGVILLE--61SFURGEON--60STANFORD--61STAR CITY--60STATE LINE--61STAUNTON 60STENDAL--60STEWARTSVILLE--60STILESVILLE 60STINESVILLE 61STOCKWELL--62SULLIVAN--60SULPHUR SPRINGS 61SUMMITVILLE 61SWAYZEE 61SWEETSER--60SHITZ CITY 60TALBOT--61TELL CITY--61TENNYSON--60TERRE HAUTE 60THOFNTOWN 62TIPPECANOE--62TIPTON 61TCBINSPORT--62TRAFALGAR 62TROY--62TYNER 62UNDERWOOD 62UNIONDALE 62UNIONVILLE--62UNIVERSAL 60URBANA--60VALLONIA 60VAN BUREN 62VEECERSBURG 60VELFEN 58,59VERNON 62VERSAILLES 61VIN'CENNES 61WABASH--61WADESVILLE--61WALDRON 61WALKERTON--61WALLACE--60WARPEN--61WARSAW--61


INDIANA (CONTINUED)

WASHINGTON 60 WAVELAND 61 WAYNETOWN--61 WE8STER--62WEST BADEN SPRINGS--61 HEST LAFAYETTE 62 WEST LEBANON 61 WEST TERRE HAUTE 60 WESTFIELO--61 WESTPHALIA 60 WESTPOINT--61 WESTPORT 60 WHEATLAND 61 WHITESTOWN 60 WILKINSON 60 WILLIAMS 61 WILLIAMSBURG 62 WILLIAMSPORT 61 WILLOW BRANCH 61 WINAMAC--62 WINONA LAKE 62 WINSLOW 61 WOLCOTT 62 WOLCOTTVILLE 62 WOLFLAKE 61 WOODBURN 61 WORTHINGTON--62 YEOMAN 62 YORKTOWN 61 ZANESVILLE 62 ZIONSVILLE 61

IOWA

ATALISSA 62 BALDWIN--62 BLOOMFIELO 62 BURLINGTON 62 CAM9RIDGE--56 CARLISLE 56 CLINTON--62 CLIVE--56 DANVILLE 61 DAVENPORT 62 DES MOINES 56 DU3UQUE--62 ELKHART 56 ELY 61 FAIRFIELO 61 FORT MADISON 62 GRANGER--56 INOIANOLA 56 KEOKUK 62 MAQUOKETA 61 MEOIAPOLIS 62

IOWA (CONTINUED)

PRESTON--62 SHELOAHL 56 SUNBURY 62 VIKING 62 WEST OES MOINES 56 WINFIELD 62

KANSAS

ASHLAND 57 OODGE CITY--57 KISMET--57 LIBERAL 57 RICHFIELD 57 ROLLA 57 ULYSSES 57

KENTUCKY

AUBURN--62 3AGCAD--61 3ANDANA--62 BASKETT 61 BEAVER DAM--61 3EECH GROVE--60 3EECHMONT 62 3ELTON--62 BERRYS LICK--62 BETHANY--62 BIG CLIFTY--61 3LANDVILLE 62 BONNIEVILLE 61 30STON--61 30WEN 62 3ROOKS--61 8ROWDER 62 BURLINGTON 62 3URNA--61 CALHQUN 61 CANEYVILLE--61 CARROLLTON--61 CARRSVILLE--61 CENTERTOWN--62 CERULEAN 61 CLARKSON 62 CLAY 61 CLERMONT--60 CLOVERPORT 61 CO OPERATIVE--62 COLUMBUS--63 CONSTANTINE 61 CCRYDON 61 CFAYNE--62 CUB RUN 62 CUSTER--60


KENTUCKY (CONTINUED)

DIXON--61 DUNDEE 61 EASTVIEW 61 ECHOLS 62 EDOYVILLE--62 ELLISTON 62 FAIROALE--62 FAIRFIELD 62 FALLS OF ROOGH--62 FARMERS--62 FLORENCE 58,60 FORDSVILLE 61 FORT KNOX--62 GARFIELO 61 GLEN OEAN--61 GUSTON--62 HAOLEY 62 HAMPTON--61 HARNED--60 HAROLD 62 HARTFORD 62 HAWESVILLE 61 HENDERSON--61 HICKORY--62 HUOSON--61 HUEYSVILLE 62 INGRAM--62 KEVIL--63 LEITCHFIELD 61 LEWISPORT 61 LIVERMORE 62 LOGANSPORT--61 LOLA 61 LOUISVILLE 61 LOVELACEVILLE 60 MACEO--61 MADISONVILLE 61 MAGNOLIA 61 MANITOU--60 MAPLE MOUNT 61 MARION--61 MASON--61 MC DANIELS 62 MC QUAOY 60 MEL8ER 62 MILTON 60 MOOLEYVILLE 60 MOORMAN 61 MORGANFIELD 62 MOUNT STERLING 61 NAPFOR 61 NEW HAVEN 62 OLATON 61 ONTON--61 OWENSBORO 61


OWINGSVILLE 62 PAYNEVILLE 62 PERRY PARK 60PHILPOT 6iPOOLE--61POWDERLY 62PROSPECT 61PROVIDENCE 62RAOCLIFF--60REED--62REYNOLDS STATION 61RHODELIA 62RICHARDSVILLE 62RICHELIEU 62RINEYVILLE 61ROCHESTER 62ROCKPORT 62ROUSSEAU--61SADIEVILLE 62SADLER--62SAINT MARY 62SALEM 61SAUL 61SCOTTSVILLE 61SEBREE 61SHAPON GROVE 62SLAUGHTERS 61SMITH MILLS 60SPARTA 62STANLEY--61STEFHENSPORT 61SULLIVAN--62SWEEOEN--60SYMSONIA 61TRAPPIST 62UNION STAR--62UNIONTOWN 61VALLEY STATION 61VANZANT 62VINE GROVE 61WACO 61WAODY 61WARSAW 61WAVERLY 60WAX--60WENDOVER--61WEST LOUISVILLE 61WEST POINT 60WESTVIEW 61WHITESVILLE 60WICKLIFFE 63WINGO 63WINSTON--61WOOD8URY--62WORTHVILLE--62



YEAMAN 61

MICHIGAN

ALTO 62 QECATUR--62 HARBERT 62 KALAMAZOO--61 LAKESIDE 62 MARCELLUS 61 SOUTH HAVEN 62 THREE RIVERS 61 WEST OLIVE 62

MISSOURI

ALTENBURG 62ALTON 63ANNISTON--63ARNOLD 63AUGUSTA--638ARING--62BARNHART 63BELLEVIEH 61,63BENTON--62BONNE TERRE--63BRAGGADOCIO 61BRAZEAU--61BURFOROVILLE 57,61CAMPBELL 57,62CAPE GIRARDEAU 61CARUTHERSVILLE 57CENTERVILLE--63CHARLESTON 63COMMERCE 62COOTER 62OEERING--57OITTMER--63DOE RUN--61DUTCHTOWN 61,63EAST PRARIE 63EL DORADO SPRINGS 62ELS8ERRY 62EOLIA--62FARRAR--61FLINTHILL 61,63FLORISSANT 62FOLEY--60FREOERICKTOWN 61FREMONT 63FROHNA 62G08LER--57HAYTI--57HIGH RIDGE 62HILLSBORO--63

MISSOURI (CONTINUED)

HIRAM 63 HOLDEN 62 IPONTON 63 JACKSON--63 KELSO 61 KEWANEE 61 LEAOWOOD 62 LOCKWOOO 62 MACOMB 62 MALDEN 63 MANCHESTER 62 MAPAVILLE 60,63 MAPLEWOOO 63 MATTHEWS 57 MC GEE 63 MENFRO 62 MESSLER 62 MORRISON 60 MOUNTAIN VIEW 61 NEW MADRID 63 NEWBURG 63 NORMANDY 60,63 0 FALLON 62 ORAN 62 OXLY 57 PERKINS--61 PEVELY--61 SAINT ALBANS 61 SAINT ANN 63 SAINT CHARLES--62.63 SAINT LOUIS 58,62,63 SAINT MARYS 62 SAINT PETERS 62 SCOTT CITY 61 SEDGEWICKVILLE 61 STEELE 57 SUCCESS 63 TERESITA 63 THAYER 63 THOMASVILLE 63 THORNFIELD 63 TRUESDAIL--62 VERSAILLES 61 WASHINGTON 62 WESTALTON 61,63 WINFIELD 62 WINONA 63 WITTENBERG 62 WOLF ISLAND 63 WOMACK 62,63 WYATT 63 ZALMA 62

MONTANA

BELGRADE 64 BELT 64 BOZEMAN 64 8UTTE--64 CAMERON--64 CANYON CREEK 64 FORT SHAW--64 GAROINER--64 GARRISON 64 GLEN 64 GREY 64 HARRISCN 64 HE8GEN LAKE 64,65 HELENA 64 JEFFERS 64 JEFFERSON CITY 64 LIVINGSTON 64 MANHATTAN-64 MAUDLOW 64 NORRIS 64 PONY 6 RAMSAY 6<f

SILVER GATE--6ffSPRINGOALE--6<fTHREE FORKS 64TRIOENT 6*»TWIN BRIDGES 6<+VIRGINIA CITY--64WHITE SULPHUR SPRINGS--6«fWILLOW CREEK 6<*WINSTON--64

NEVADA

CRESCENT VALLEY 6*t YUCCA FLAT 67

NEW YORK

WAPPINGERS FALLS 10

NORTH CAROLINA

BREVARD--53 BRUNSWICK--56 OAVIOSON 56 FORT FISHER--56 GIBSON--56 HAYESVILLE--53 HENDERSONVILLE--53 LAKE WACCAMAW 56 SOUTHPORT--56 TEACHEYS 56 UNION MILLS 53

WAYNESVILLE 53 WILMINGTON 56 WRIGHTSVILLE BEACH 56

OHIO

ANNA 62 ANSCNIA--61 ATHENS 5<+ BELFRE 5<* BOWLING GREEN 64 CENTERVILLE 62 CHRISTIANS8URG 62 COLLEGE CORNER--60 COOLVILLE 54 QESHLER 62 ELDORADO--62 FARMERSVILLE 62 FINDLAY--64 FORT RECOVERY 60 FOSTORIA 64 HARBOR VIEW 61 HCCKINGPCRT--54 LUCKEY--62 MACON--62MARIETTA--54 MC GUFFEY--62 MIAPISBURG--62 MIODLETOWN--62 MONTEZUMA 62 NELSONVILLE--54 NEW KNOXVILLE--62 NEW LEBANON 62 NEW MADISON 62 OHIO CITY--62 PIKETON 62PIQUA 61°OMEROY--54PORT JEFFERSON--62REEDSVILLE--54ROSEWOOD-62ROSS--62SEVEN MILE--60STOCKPORT--54TIFFIN 64TIPF CITY--62VAN WERT 61VERONA--62VINCENT 54WEST ALEXANDRIA--62WEST MILTON 63WILLISTON 63WILKINGTCN 63WREN 63WRIGHT PATTERSON AIR FORCE BASE 63

OKLAHOMA

ADAMS 57 8AKER--57 8ALKO--57 BEAVER--57 BUFFALO--57 CAMARGO--57 ELMWOOD 57 ERICK--57 FARGO--57 FORGAN 57 FORT SUPPLY--57 GATE 57 GOOOWELL 57 GUYMON--57 HAROESTY 57 HOOKER 57 KNOWLES 57 MAY 57 MAYFIELD--57 MOORE 6«» MUTUAL 57 OPTIMA--57 REYOON 57 ROSSTON 57 SHARON--57 SHATTUCK 57 SWEETWATER 57 TEXHOMA--57 TURPIN--57 TYRONE 57 VINSON 57 WOODWARD 57

OREGON

GOVERNMENT CAMP--71 HOOD MEADOWS 71 RHODODENDRON 71

PANAMA CANAL ZONE

BALBOA HEIGHTS--77 PANAMA CITY--77 PANAMA--77

PUERTO RICO

BOQUERON 77 CAGUAS 77 CAYEY 77 FAJAROO 77 GUANICA 77 GUAYAMA 77 HUMACAO--77 MAYAGUEZ 77 PONCE 77

PUERTO RICO (CONTINUED)

ROOSEVELT ROADS 77 ROSARIO 77 SAN JUAN--77

RHODE ISLAND

COVENTRY--10 WEST WARWICK 10

SOUTH CAROLINA

ABBEVILLE--53AIKEN 53,56ALLENDALE 56ALVIN--56AWENDAW 56BARNWELL 56BATH 53,563ELTON 5<»3ETHUME--568ISHOPVILLE 563LACKVILLE 563LAIR 533LYTHEWOOO 56BORDEAUX--56CALHOUN FALLS 53CAMERON 56CANAOYS 56CAYCE 56CHARLESTON AIR FORCE BASE 56CHARLESTON 5<t, 56CHESTERFIELO--56CLARKS HILL 53CONWAY 56CORCESVILLE--56COTTAGEVILLE 56CROSS HILL--539ENMARK--56

EDGEMOOR--5^ELGIN--56ELKO 56ELLIOTT 56ESTILL--56FLORENCE--56FORT MOTTE 56GABLE--56GASTON--56GEORGETOWN--56GOOSE CREEK--56GPANITEVILLE 53,56GREAT FALLS--56GREELEYVILLE--56GPEENWOOD--53HICKORY KNOT STATE PARK 56

SOUTH CAROLINA (CONTINUED)

HODGES 53 HORATIO 56 ISLE OF PALMS 56 JAMESTOWN-56 JOHNSONVILLE 56 JOHNSTON 53,5*» KERSHAW 56 KINGSTREE--56 LAOSON 56 LAMAR 56 LEXINGTON 5k LOWNDESVILLE 53 LYNCH8URG 56 MANNING 56 MARION 56 MAYESVILLE 56 MC BEE 56 MC CLELLANVILLE 56 MC CORMICK 53,5<* MEGGETT 56 MOOOC 53,5i> MONCKS CORNER 56 MOUNT CARMEL 53 MOUNT HOLLY 56 MOUNT PLEASANT 56 MYRTLE BEACH 56 NEESES 56 NEW ELLENTON 53 NICHOLS 56 NINETY SIX 53 NORTH AUGUSTA 5k, 56 OSWEGO 56PARKSVILLE 53,5<»t56 PARR 56PAWLEYS ISLAND 56 PEAK 56PLUM BRANCH 53t56 RAVENEL 56 REMBERT 56 RIDGE SPRING 5k RIOGEVILLE 56 ROUND 0 56 RUSSELVILLE 56 SAINT MATTHEWS 56 SALLEY 56 SALUDA 53 SANTEE 56 SCRANTON 56 SHELOON 56 SUMMERTON--56 SUMMER VILLE 5<»t 56 SWANSEA 56 TRENTON 5k TRIO 56 ULMERS 56

SOUTH CAROLINA (CONTINUED)

VAUCLUSE 56 WARRENVILLE 53,56 WEST COLUMBIA 56 WILLIAMS 56 WILLINGTON 53,56 WILLISTON 56 YONGES ISLAND 56

TENNESSEE

BOGOTA 57 BRADFORD 57 CAMOEN 57 CELINA 63 DARDEN 57 DYER 57 DYERSBURG 57 ELBRIOGE 57 ERIN 63 EVA 63FRIENDSHIP 57 HORNBEAK 57,63 MC MINNVILLE 53 MIDWAY 63 MISTON 57 MORRIS CHAPEL 57 OBION 57,63 RIDGELY 57 SAMBURG 57 SCOTTS HILL 57 TIPTONVILLE 57 TRIMBLE 57,63 TROY 57,63 WHITE BLUFF 63 WHITE PINE 63 WOODLAND MILLS 57

TEXAS

AMARILLO 57 BOOKER 57 80RGER 57 BRISCOE 57 CANADIAN 57 OARROUZETT 57 DUMAS 57 FARNSWORTH 57 FRITCH 57 GLAZIER 57 GRUVER--57 LIPSCOMB--57 MASTERSON 57 MORSE 57 PAMPA 57 PERRYTON--57

TEXAS (CONTINUED)

SANFORD 57 SPEARMAN-57 STINNETT 57 SUNRAY 57 WAKA 57

UTAH

CEDAR CITY 6<» ENTERPRISE 64 FAIRVIEW 65 LEWISTON 65 MARYSVALE 65 PRESTON--65 RICHMOND 65 SUMMIT 64 WESTON 65

VIRGINIA

BELSPRING 53 BLAIRS 53 CARTERSVILLE 54 CATAH8A 53 CLINCHPORT 63 COLUMBIA 54 CUMBERLAND 54 EGGLESTON 53 EMORY 53 FINCASTLE 53 GEORGES TAVERN GLEN LYN 53 GOOCHLANO 54 KIMBALLTON 53 LAFAYETTE 53 NEW CASTLE 53 NEWPORT 53 NORA 63 PAINT BANK 53 PALMYRA 54 PEMBROKE 53 RIPPLEMEAO 53 ROANOKE 53 VANSANT 53

WASHINGTON

ANACORTES 71 ARLINGTON 71 BELLINGHAM 71 BRINNON 71 CAMAS 71 CARBONADO--71 CARNATION 71 CLEARLAKE 71

WASHINGTON (CONTINUED)

CLINTON 71 CONCRETE--71 COUPEVILLE 71 OARRINGTON 71 DUVALL 71 EASTSOUND 71 EATONVILLE 71 ELBE 71 FREELAND 71 FRIDAY HARBOR 71 GARDINER--71 GRANITE FALLS 71 GREENBANK 71 HAMILTON--71 INDEX 71 INDIANOLA 71 ISSAQUAH 71 JOYCE 71 KAPOWSIN 71 KITTITAS 71 LA CONNER 71 LAKE ROESIGER 71 LANGLEY 71 LONGMIRE--71 LOPEZ 71 LYMAN 71 LYNDEN 71 MACHIAS 71 MARYSVILLE 71 MATTAWA 71 MONROE--71 NOROLAND 71 OAK HARBOR--71 OLGA 71ORCAS ISLAND 71 ORCAS 71 PACKWOOD--71 PARKDALE 71 PLAIN 71 PORT GAMBLE 71 PORT LUOLOW 71 PRESTON--71 QUILCENE 71 RANDLE 71 RONALD 71 ROSLYN 71 SAN JUAN ISLAND 71 SEABECK 71 SEATTLE--71 SEDPO WOOLLEY 71 SELLECK 71 SILVANA 71 STANWOOD 71 TACOMA 71 UNION 71

Index of Town Names \ 25

WASHINGTON (CONTINUED)

VANCOUVER ISLAND 71 VANCOUVER--/! WINLOCK 71

WEST VIRGINIA

ALOERSON 53 BELLEVILLE-54 COTTAGEVILLE 5k CUCUMBER 53 DINGESS--53 DRENNEN 53 FOREST HILL--53 GAP MILLS 53 GARY 53 GREENVILLE 53 LINDSIDE 53 MEADOW BRIDGE--53 MORGANTOWN 5k NEW HAVEN 5k PARKERSBURG 5k PETERSTOWN 53 PICKAWAY 53 RAVENSWOCD 5k SARTON 53 SWEET SPRINGS 53 UNION--53 WAITEVILLE 53 WILLOW BEND 53

WISCONSIN

KANSAS VILLE 63 MOUNT HOPE 63 TREVOR 63

WYOMING

CANYON VILLAGE 65CANYON-64GRANTS VILLAGE 6kLAKE 64LEWIS LAKE 65MADISON JUNCTION 64,65MAMMOTH 64OLD FAITHFUL 64,65TEN SLEEP--64TOWER JUNCTION 64WEST THUMB JUNCTION 64YELLOWSTONE NATIONAL PARK 6«*,65

* U.S. GOVERNMENT PRINTING OFrICE: 1976 679-639/18 REGION NO. 8

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